Wordpress and Cloudflare SSL no Plugins or Themes installable. 524 Error

I use the cloudflare proxy and SSL function for my wordpress site.

Since the downtime last weekend I get multiple 524 failures when trying to load themes or plugins.

Did anyone experience that too lately?

Also tried to turn off the proxy with no success.

Installation was now possible with lots of retrys. Importing a template is now the same game. Is there something to improve this?