I think name is not problem but I agree that AnotherAlt does not have enough activities and posts.
He had enough posts to rank up to become a full member, but he just needed to wait a while for his activity points to renew 14 points in 14 days to reach 120 points to rank up. Currently he has only 98 activity points and that should make him wait for the next 2 periods (14x2=28 days) to fulfill the required number of activity requirements, but I must say that he only needs to post at least 1 in 14 days each period.
I know how activity is counted but I did not check his post history.
I do it today and find that the user began to post since April 2022 so it is why the user does not meet enough activity to rank up to Full member. Posting actively and regularly enough. I made an incorrect point above. Sorry.