two bits of info here:
1) from the hosting company (A2hosting), they wrote:
We have checked your service, permissions, and logs and have found a couple of clues to what could be the reason for the backup errors. However, in order for us to be able to treat this problem more efficiently, we would ask you to provide the following:
1) Steps to reproduce the issue and all the needed access details, including WordPress admin panel login and password and any other details necessary to reproduce the issue.
2) What is the error you’re receiving if any?
These details will help us to determine the core cause of the issue and resolve it. Looking forward to hearing back from you!
Best Wishes,
Vlad
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as per your request: the log can be downloaded here:
https://www.studiospinner.com/downloads/
so i’ll be waiting for your reply