One of the best WP plugins ever just became totally unreliable

Since it’s REST API updates (probably) this plugin became totally unreliable. In two months I have to look for some alternative on the third production client site, they losing conversion, me losing lots of development time and lots of money.

The issues are furthermore really difficult to reproduce and track. E.g. some form works, another one doesn’t; when one seems to be fixed another one starts to produce problems; not mentioning submit errors trackable only by using Browserstack, sometimes this latter doesn’t help either.

I’m really very disappointed – in the past few moths I’ve spent s***loads of development hours by trying to fix these issues as I was persuaded that WPCF7 is The Best Form Solution for WordPress.
Now I’m not anymore. I’m leaving the club.