I personally mine here and have not had many issues. It sounds like the coin had a problem in the beginning and maybe there is something wrong with the pool configuration. To keep it safe I would mine elsewhere as with a low diff you should get some coins. Don't leave Minep.it for good, the operators Danz and Carlos are good at what they do but unfortunately they are human and don't work 24/7 on the pool. They are typically on chat around 2:30 AM PST but you can e-mail them at info@minep.it as well.