Hi there,
Responding to your email here. Thank you for letting us know that you have the latest versions of our products.
βA checksum mismatch is what happens when a file on the client and on the server are not identical.β
Reference: https://www.elitegameservers.net/clientarea/knowledgebase/47/Checksum-mismatch-how-to-fix-it.html
Can you go to Tools > Site Health and see if there are issues that need to be addressed?
Can you also check if you have enough disk space/memory in your server for the update?
It may also be good the reach out to your hosting provider and see if there may be an issue in your server that may be causing this.
Kindly let us know how it goes. π