Hi Bram,
Thanks for reaching out although I’m sorry to hear you’re having issues with Total Upkeep. I’m not sure of the status of your premium ticket but I do apologize for any inconvenience you’ve experienced.
Typically, this issue is due to exceeding some limitation of your hosting account, such as Memory, CPU, Disk Input/Output, or a timeout.
Try creating a sanity check backup just to see if backups are completing at all and check your Pre-Flight Check for any obvious issues.
You can also try changing your compressor type to a System Zip or PclZip. Navigate to Total Upkeep > Settings > Backup Process. If System Zip is available, choose that option. System Zip is significantly faster than the PclZip or ZipArchive libraries, and may use fewer resources. Attempt to create another backup using the Default compression level.
If the backup still fails, try reducing the Compression Level. A setting of 0 will not compress the backup at all, using the lowest amount of CPU and memory. This does mean that the Disk Input/Output is increased due to the larger file size, however.
I hope this helps, we look forward to assisting you further with this.