Many thanks for getting back to me – I tried that, but have the same amount of errors as before.
Any chance you could contact me again?
Your package fails with these errors:
Object 'APXTConga4__Conga_Email_Template__c' not found.
Object 'APXTConga4__Composer_QuickMerge__c' not found.
Object 'AccountBrand' not found, etc.
We checked your Salesforce connection (as you have mentioned you have cleared metadata cache) and cannot see objects mentioned in the errors. This means, that your Salesforce instance does not have these objects anymore and Skyvia cannot perform backup for them. Please exclude objects that fail with the "...not found" error from your backup package.