ERR SSL VERSION OR CIPHER MISMATCH without config changed

Hi.
I need help for my website that display ERR_SSL_VERSION_OR_CIPHER_MISMATCH. This error has never displayed before. This website used to work fine for 6 years (My friend setup for me but i cannot contact him anymore). I have never done anything. It shows this error since yesterday. I come from non it background. It would be very helpful if anyone provides any workaround. Thank you.

Domain name : REDACTED
Universal SSL - Active
SSL/TLS encryption mode is Flexible
Minimum TLS Version is 1.2
Domain no expire

Domain is not using Cloudflare and redirects to a site classified by Cloudflare Radar as malware (thanks Zero Trust Gateway!).

Thank you so much. I just see redirect link after i try to open url with http.
I will focus on Malware problem first. if there are any suggestions, please let me know.

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