SSL keeps going back and forth from valid to invalid on my websites

My SSL keeps going back and forth from valid to invalid on my websites. I'm using LetsEncrypt free SSL on the client domains.

The sites will load fine, then an image or two will not load or sometimes the whole site invalid by the browser but fine with a refresh of the browser.

I tried deleting the SSL, reinstalling and rebooting everything but still the same thing.

When I use the test tools for SSL the validation sites will mostly say the cert is fine..but once in awhile it will tell me the date is invalid...but then fine with another validation test on the same site.

But..even when the validation test is fine the expiration date in the validator doesn't match the Module SSL date in CWP.
 
Does anyone have an idea as to the best way to debug this?

Thanks for your help on this.

Wait 48 hours.

UPDaTE:
The problem persisted.
I deleted all the certs, reinstalled and then rebuilt the apache server. Restarted services and all is well!