@mdc2957 – Ivan Atanasov here, a Senior in the Support Team at SiteGround.

I have personally tested the Updraft Plus plugin in an isolated environment and followed it’s execution.
It was able to complete a backup twice successfully (first backup was saved locally; second backup was sent to Google Drive)

We have a fair policy for the maximum allowed time for script executions on our shared hosting plans. It could be the case here.

However, we would like to perform an investigation ourselves. If you can create a Support Ticket and allow us to test the plugin on your website, we might reach a conclusion for this issue.

If you already have a ticket, please share it’s ID here, so that we can send a follow up in it.