Entry process failures on simple wordpress websites

Website URL

www.archeryclub.co.uk

Error Message

I’m locked out of this site because of entry process failures. Is this a design flaw in the service?

On 9th I had a massive spike of entry process failures causing the site to lock out. There was a traffic and CPU spike on 7th/8th but nothing on the 9th.

Other Information

This is a very very basic wordpress site (it really couldn’t get much simpler) with very few plugins, so how can I diagnose what could possibly be causing these issues?

I had a similar issue with another, incredibly simple site, the day before. Sudden huge entry process failure spike out of nowhere which killed the site for a day.

Anyone know how to diagnose such issues on a bog standard wordpress install? Is there something happening in standard installs that infinityfree just doesn’t like?

What are they? A bunch of light plugins would not cause an issue but one really heavy one can.

I’ve removed all plugins except wordfence, and I’ve now moved it behind cloudflare to see if that does anything to calm down these errors.