HTTP ERROR 500

Hello, so yesterday my wordpress based website could not load any more, it started spitting out these erorrs - HTTP ERROR 500 and nothing more.

 

As suggested on the forum I have tried renaming plugin/theme folders and htaccess file(my website has https so could have been it ).

Nothing helped - then i have contacted support, unfortunately they could not see what's the issue from their end and suggested to..... call their support.

 

Is anyone else experiencing this? It's affecting my business and i need to get it solved ASAP, all the ideas are welcome ! 

 

P.s (other page on the same host works fine *not wordpress)

 My website https://www.10acc.com

 

Thank you !