False SSL expired error caused by MainWP, not by Let's Encrypt?

[Alwin]

Hello Bogdan, I started this topic because I think it is another issue then this one:

Let's Encrypty update causing issues

We have verified that there was an issue (on Cloudways end) with the update of the Let’s Encrypt older root certificate (DST Root CA X3) to their newest version (ISRG Root X1), which is causing some sites not to be able to connect to their MainWP Dashboard. Cloudways is currently working on a fix, and we do not have an ETA. You can watch CloudWays status on the problem at https://status.cloudways.com/ This issue may affect other hosts, too, but we only have confirmation from Cloudways. Infor…

Has I said, my MainWP site is running on Cloudways, but not with an Let’s Encrypt certificate!!!
(in fact, it is a Sectigo certificate)

So my issue may not be related to the Let’s Encrypt issue? That is my question!?

Also, can you answer me my previous question about security:

• • Is the connection between my dashboard site and child site less secure when Verify SSL certificate is disabled?

Thanks for your help
Best Wishes,
Alwin