My mother lives in an apartment complex for seniors and we were told by the office that her POA is outdated as there are new ones available. We need someone who will come to her apartment with the standard POA and my sister and I will meet them there. My mother has all of her faculties and is able to sign a POA.
Otherwise the Attorney would charge for his/her time traveling from the office to the apartment and back again... and charge for his/her Notary time/travel, plus your Mom would need two witnesses [neither you nor your sister can witness if your Mom had chosen both of you to be her Power of Attorney], the notary cannot be a signed witness, thus the Attorney would need to bring two of his/her Staff to come along as Witnesses unless Mom or you can produce two witnesses.
Plus if there is any last minute change to the Power of Attorney, it is easier to do in the office.
It is always good to have a Power of Attorney updated, but it is never mandatory. In fact, I don't recall giving the complex where my Dad lived a copy of the POA, only the DNA paperwork, and a form that was filled out asking about doctor, dentist, etc. and who was my Dad's POA.
I would not base ANY legal action on the recommendation of someone in an apartment management office. I doubt if they're qualified to make legal decisions on delegation of authority.