ninoloss

So, here is my final take on this issue: I just waited to see the first updates of the plugins after the wp update to 5.5 and it resolved by itself. This means that the error was introduced with the wp upgrade 5.5 and the plugin responsible for the error was then fixed. From all I can tell, here the culprit was Jetpack.
Have a nice day.

Yes, it is this GDPR plugin.

The problem: This doesn’t work because of the quotes from the link a href inside the quotes from wpgdprc. It skips everything after the second ” so it ends with <a href=”:

[wpgdprc “By using this form you agree with the storage and handling of your data by this website. For more info please see the privacy policies“]

I hope this was clearer.

BTW I had to switch from Contact Form 7 to another plugin because of an additional problem: On mobiles and tablets, it wouldn’t send the message. It just kept spinning. I read in the docs that this is due to bad interaction with another plugin, but I couldn’t locate which. WPforms works just fine. If these two issues could be solved I would like to switch back to Contact Form 7.