Respectfully, I would think that the Rodni family spokesperson may know, better than most, if AWP accepts rewards, as they clearly, in this case at least, declined to accept one, as she has stated that the larger donations pledged have already been returned to the donors. This is in the very link you supplied.
As to the case in 2020, yes, AWP initially apparently attempted to claim the $100,000 reward, after locating the remains in a 7 year old case, but ultimately decided not to sue, and did accept some monetary amount. Perhaps it was after that situation, two years ago, that they decided that going forward, they would accept no rewards.
Frankly, I doubt that anyone whose loved one they found would have an issue with them accepting any offered reward, and from what I have read online, very many people have expressed a wish that AWP would accept the reward. Let us not forget, had it not been for AWP, Kiely would most likely still be in the bottom of Prosser Reservoir.
They should absolutely get the full reward and then they can use that to find other missing people. Not to mention, they were in another part of the country and quit early on other searches they had planned to do so they could come back and search for Kiely. So, there are other families who thought they were about to get AWP's help and they cancelled to search for Kiely. It's weird they would start returning part of the reward to donors and keep the rest instead of just giving it all to AWP. It shouldn't have been a question. They should just do it. It's the right thing. Maybe AWP didn't want to get involved in another lawsuit. Too bad...that reward money could have helped a lot of other families in the same situation.