Ended up with this to clean them. This is uncharted territory for me regards to how Tonfotos works with its .tonfotos.ini file when the folder is synced with a cloud.
Get-ChildItem -Force -Recurse -File -Filter “.tonfotos [conflicted*” | Remove-Item -Force
Note: The filter to have pCloud exclude .tonfotos* sems to have fixed this problem.
Thank you for your fast reply.