When the voting reward was first introduced, all 7 voting sites still worked, so even if one broke, there was still an opportunity to get the reward. Since then, both sites 2 and 6 have broken and since 6 has been removed and 2 has been broken since the maintenance quite a while ago, I think that the requirement for the voting reward should be lowered to 4 sites, at least until one site is back up, if they are going to b e, so there is room for one site not working (which I find sometimes happens with site 1 as it takes longer for the vote to register).