For the last several days I have had my site go down after having updated to the latest version of W3TC. I am unable to access the site or even log in as administrator. I was eventually able to log in using the WordPress recovery mode. W3TC had been disabled due to some issue so I tried re-enabling it and lost access again.
I used FTP and renames the W3TC plugin folder and went through the deletion process. I was able to access my site again and re-installed and re-configured W3TC again. All was well and the site was up for at least a day.
Today the same thing happened again. At this point I have no other option but to leave W3TC disabled.
Wordpress version is 5.5.1 and all plugins are up-to-date.