The first photo looks like poor adhesion to the bed,. Maybe due to:
- Nozzle too high? If so, adjust bed-leveling so that gap is thinner.
- Dirty, soapy, oily bed? If so, clean with isopropyl alcohol, then with pure tap water.
- Maybe other reasons?
So I would first look into that direction.
The second photo, I can't really say.
I'm having a very similar problem to you and would love to know what is going on. I too have levelled multiple times. My UM2+ is second hand, my other printer definitely does not need this much bed levelling attention so I feel the issue is comign from something else.
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