if you run Apache with cPanel/WHM, you can do a temporary fix, yo can disabled OCSP Stapling within the Apache configuration and restarted Apache to apply the changes. With OCSP Stapling disabled, the browser now checks the revocation status, rather than the server itself. This reduces the burden from the server, and eliminates the possibility of this issue occuring again (unless OCSP Stapling is re-enabled and this happens again).
The directive is as follows: SSLUseStapling off
This directive cannot be controlled from WHM, it needs to be manually configured using an access method such as SSH or sFTP.
I hope this help.