About an hour ago I reinvested around $25 in BTC back into hash power.  When the page refreshed to reflect this, it suddenly showed my mined BTC as a negative value, so I switched to mining Tether.  The BTC went back to positive, right where it should have been and the Tether went negative.  Hoever, after a conversation with support and some testing, I discovered this was an issue with the image only, and that my profits were still accruing exactly as they should be, because I was able to reinvest $.10 of Tether when it only showed me as having a little over $.017