Hi @NGinSS. In the contact record, are you looking at the Activities tab, and the activity timeline? And are the filters set up so you can see the notes?
Or are you looking at the Notes tab under there?
If you go to Actions, the “restore activity,” do you see the deleted notes and why they were deleted?
HubSpot shouldn’t be deleting notes for no reason. It should take a user deleting it, and you should be able to track down who and why.
I’d also reach out to HubSpot Support if you still have questions.