Ahh i see your problem.
not so recently the point system changed and the voting system for Meta was 5 for a vote and downvote, hence why the point limit was so low to vote.
Recently the voting system changed on all sections and now the system is 10 for a vote and downvote and the limit was moved up (or down in Pokebase's case) to 40.
Obviously some people cant remember or just never new so yep that is why you can not vote.
No longer 30 to vote.