I understand very little English. Of your posts do not understand what is happening with the pool. I see only that statistics are not updated. Just answer in one word - to switch the rig to another pool or not, and here's just a problem with the statistics, and Mining, which is now will be reckoned later?
NO -
stay at middlecoin. Only display the stats is not working. Pool itself works fine! Tomorrow you should see normal stats.