I don't know, I am dubious as - AFAICT - "kindly accept" is used (and makes sense) for something that is given to the person, like apologies, a present, an application.
In the context of asking to accept a (imposed as there are no alternatives) licensing model and a fee it sounds to me "strange".
no, "kindly accept" basically means "be so kind as to accept". even disregarding the idiomatic nature of the phrase and just looking at "kindly" as an adverb, grammatically when you say "we ask you to kindly accept" the person being asked is the source of the kindness, and the person doing the asking is the recipient. "kindly ask" does not make much sense, since you are not being kind by asking for something.
