More a heads up for others but if you have Monzo hooked up to IFTTT, there may be an issue with multiple sheets being created.
I don’t often log in to my Google Sheets account but did this morning and was confronted with multiple ‘Untitled’ Sheets. Each one (going back to when this started on 14th May) held one transaction from Monzo.
I’ve disconnected Monzo for now and am manually deleting the sheets. Will re-enable once that’s done and see if I can recreate the issue.
tl;dr - check your Google Sheets homepage more often in case you have this issue too.