The firewall on this server is blocking your connection. 

HTTP/1.1 200 OK
Date: Sun, 21 Apr 2024 16:21:27 GMT
Content-Length: 1479
Connection: keep-alive
Cache-Control: no-cache, no-store, must-revalidate, max-age=0
Cache-Control: no-store, max-age=0
Server: imunify360-webshield/1.21

Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            d7:64:63:d8:9e:2c:05:d6
        Signature Algorithm: sha256WithRSAEncryption
        Issuer: CN=ni-sofia.guzelhosting.com
        Validity
            Not Before: Apr  9 20:21:32 2020 GMT
            Not After : Apr  9 20:21:32 2021 GMT
        Subject: CN=ni-sofia.guzelhosting.com
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                Public-Key: (4096 bit)
                Modulus:
                    00:a0:11:1f:27:2b:b0:e7:23:b6:67:01:9a:17:4c:
                    9e:55:07:14:52:a4:28:bd:c0:f3:03:5e:eb:7d:cd:
                    43:45:25:f1:6b:88:26:90:27:b2:14:1b:42:3b:63:
                    64:20:2c:78:bc:f4:13:cc:e5:42:fc:22:a8:dc:38:
                    68:9f:8b:bd:ec:7e:5c:5a:87:a1:60:dd:74:eb:7c:
                    ed:cc:5f:bc:a3:38:52:b8:df:43:b3:09:aa:77:a8:
                    d5:0d:33:21:90:d4:8b:2a:6b:bd:c3:e1:82:3b:b6:
                    75:1f:20:5d:15:fc:d9:ab:fd:0e:71:de:94:51:57:
                    be:f9:b8:fc:eb:da:82:b3:19:6c:ce:6e:c0:5a:16:
                    6b:67:15:03:83:35:16:73:8d:43:0e:9e:c2:05:83:
                    0a:7c:66:3a:82:ee:f1:7e:4b:ea:12:81:6e:fb:e6:
                    d2:17:85:36:15:25:e8:69:48:3f:d9:0c:86:8b:f8:
                    13:6f:8c:af:f0:5b:4a:dc:b9:e2:20:82:c8:28:0e:
                    c6:43:a7:75:a2:3f:e1:a0:be:10:28:9c:2b:84:84:
                    76:d6:b4:b7:61:73:30:8d:a3:ff:e2:2a:12:b7:0d:
                    40:bb:22:03:30:0f:4f:26:71:72:15:0f:21:3f:fa:
                    f8:3f:5a:e3:9d:93:7d:5f:69:04:11:ed:c6:63:20:
                    66:22:0e:1c:4f:a4:12:b1:c6:0e:11:b1:61:12:61:
                    7c:fa:1c:1b:b3:c3:b2:64:6f:82:4b:84:27:e4:ed:
                    f6:55:00:ec:9b:29:13:c1:5d:ad:4f:1d:4e:3c:7b:
                    fd:55:1d:2f:4c:2d:72:42:45:6f:f4:41:5c:6c:b1:
                    16:f0:46:16:dd:6d:29:fc:ce:8e:51:02:ae:9f:3c:
                    56:a3:c2:b5:f2:2a:f0:da:22:96:16:87:27:43:de:
                    ef:22:f7:96:55:8c:c8:cb:e1:cc:d4:d6:3f:d8:9a:
                    1b:90:0b:7f:b5:9e:52:95:57:47:91:cf:0e:d3:29:
                    10:d5:59:61:60:a2:13:4c:4a:d0:50:24:f4:83:c6:
                    fa:df:34:20:ff:66:6d:2a:62:59:18:01:8a:d9:13:
                    c8:2a:d8:90:c5:c9:af:e2:84:92:70:fc:bc:02:2b:
                    cd:b4:2c:e0:a0:6e:87:77:3e:bb:b6:af:35:89:15:
                    d7:f5:22:ba:92:39:e8:19:ed:69:45:02:39:63:eb:
                    4a:4b:f2:b2:3a:e1:58:2b:ab:c8:52:40:54:6a:70:
                    f5:ab:da:20:8c:db:12:9c:77:34:0a:91:70:1a:4b:
                    2b:bd:24:6c:29:5f:da:fe:b0:32:92:d9:96:85:31:
                    07:c0:71:07:98:d2:8e:b9:6c:f1:e2:41:cf:61:22:
                    10:96:c7
                Exponent: 65537 (0x10001)
        X509v3 extensions:
            X509v3 Subject Key Identifier: 
                DD:B3:2B:07:F6:32:54:C5:89:15:5A:26:1A:7D:71:38:2E:2F:1D:92
            X509v3 Authority Key Identifier: 
                DD:B3:2B:07:F6:32:54:C5:89:15:5A:26:1A:7D:71:38:2E:2F:1D:92
            X509v3 Basic Constraints: 
                CA:TRUE
    Signature Algorithm: sha256WithRSAEncryption
    Signature Value:
        45:7c:cf:2a:68:f3:27:35:0d:75:cc:97:55:66:44:3e:c5:32:
        7e:0b:91:16:ec:b2:bf:b5:70:a3:4f:83:2f:a9:39:d4:80:34:
        ab:3d:d4:40:a5:99:95:79:57:39:5d:8f:3a:82:ed:ee:2b:f3:
        31:a4:92:1e:b1:6b:90:af:12:f1:ab:d2:c8:47:1a:97:dc:97:
        60:8f:e7:24:5c:4e:9a:e7:7a:5f:9e:69:3f:84:ab:f5:db:f9:
        94:3c:e0:7a:27:80:fa:6c:d7:97:13:c5:e9:11:88:62:0c:64:
        87:2c:bf:4a:92:05:5c:f2:3e:63:14:28:fa:92:2e:97:98:6c:
        b5:68:4c:69:45:b3:01:f1:1d:7a:93:9a:6f:7b:51:6b:25:98:
        8d:05:77:97:7e:da:c0:8b:35:a4:03:3d:0c:dd:c5:75:7a:e9:
        0c:15:e9:35:07:12:7f:e3:15:c2:58:d0:f0:cb:08:15:c1:4e:
        43:df:06:1c:6a:c6:de:78:28:34:1b:af:81:25:c4:25:a0:db:
        79:68:ad:3b:e9:46:4c:54:2e:a6:2b:78:df:64:68:6d:c3:10:
        c8:43:69:4d:12:4d:15:d8:e0:70:03:a3:5c:8e:5b:32:89:5b:
        f9:52:99:2c:fd:ff:dc:a4:e0:4e:43:02:fd:19:60:41:42:98:
        38:d0:37:89:ee:aa:76:70:b1:9e:35:1f:fa:09:e4:c3:2a:85:
        62:d6:2c:bc:8e:36:02:1a:60:26:4f:a0:33:f3:de:15:9c:00:
        96:b3:39:6b:6f:7b:49:2d:d1:c6:76:de:55:76:4e:dd:d9:4c:
        41:d9:6a:2f:f5:74:aa:02:41:1b:3b:8b:06:e9:11:b3:23:9e:
        db:a4:08:00:1d:8a:90:c9:11:8a:a0:b5:f9:4e:02:6c:af:1b:
        70:9b:ef:ae:e3:e3:b7:f1:4b:1c:be:63:96:c7:3f:e4:27:bc:
        91:27:2b:42:dd:a9:d4:41:e6:e9:b3:e0:2a:0b:10:01:7a:ec:
        ec:cf:85:e0:fc:7c:f0:a5:51:44:0d:fb:a9:a9:9b:4b:43:f9:
        4c:71:54:37:01:ee:e9:91:1d:15:19:f0:9e:72:85:24:76:e8:
        e9:1a:bf:e9:32:0f:13:75:cc:43:87:96:8f:81:5a:f3:ae:23:
        16:5d:ed:88:25:4c:44:d0:c0:15:1c:bd:e8:8e:e0:ac:57:1c:
        fd:3e:04:8a:1e:5c:ed:ad:6d:7e:bc:79:0b:87:54:23:b1:2e:
        9c:3a:1e:0a:24:8f:e7:25:ff:76:29:40:f8:1e:f3:82:3e:7c:
        49:63:3e:3d:42:bc:50:6a:2c:67:d5:fe:3b:0e:5d:81:fd:2b:
        0a:7d:08:90:14:40:f4:a8

HTTP/1.1 400 Bad Request
Date: Fri, 19 Apr 2024 23:26:29 GMT
Content-Type: text/html
Content-Length: 154
Connection: close
Server: imunify360-webshield/1.21

<html>
<head><title>400 Bad Request</title></head>
<body>
<center><h1>400 Bad Request</h1></center>
<hr><center>openresty</center>
</body>
</html>

HTTP/1.1 400 Bad Request
Date: Wed, 10 Apr 2024 20:34:26 GMT
Content-Type: text/html
Content-Length: 654
Connection: close
Server: imunify360-webshield/1.21

HTTP/1.1 403 OK
Content-type: text/html