Good day team.. have problem with my website i lost all ranking and lost 10x times traffic in 1 day without reason...

[EvilTIGER]

Good day everybody. My website is www.evilrpm.com and ii have drop in rank and traffic in 1 day without reason... still fighting with that issue .. from that moment i starts to get the errors and in search console if i make testing pages  .. after test they can show like warning or error page but in console its green.. i was check everything, and i think that problem in server.. because it happened when i write the truth about my experience with Shopify... this is extraordinary organization i feel like they from the starts was don't give me the way to grow...  any idea what the problem? thanks for your support!