Moved into new house with ring doorbell. Need YOUR help, friends

Hi. Recently moved to a new home where this doorbell was pre installed. I'm interested in taking over this account but running into snags due to me being a newbie. Support says I need a Mac address but couldn't tell me how to get it. I looked online and it seems if I take the two screws out of the bottom I can access it but it needs a specialize bit. That's my snag number 1. Anyone know the exact bit needed? Snag number 2 .. I'm not sure which ring doorbell I have. Pictures attached. Snag 3. Support says the previous owners would need to be contacted personally and asked to relinquish their account for this device... this can't be right.. I own the house and can provide proof .. there's no reason the previous owners should be able to monitor me!! Plus the previous owners were unrealistic and unhelpful at all angles during the buying process and even the realtor said not to expect an answer on this matter... so what did u guys do when u moved into a house that already had it?? Any help would be appreciated.