Hello,
On many websites, I cannot update to the latest version (Pro) 10.3.5, and I receive the following message: 'The checksum verification failed. Please make sure you are using the correct update server!'
I have RSFirewall and JCH Optimize on a few sites, so I tried websites without these plugins like https://www.mhenneke.de . But I get the same error.
What should I do? I use BackupMonkey.io so that I don't have to update each site manually.
Thank you for your help!
Best regards,
Pierre