I posted in December about my 100/30 MPPT which lost Bluetooth connectivity and, as advised here, I sent it back to the seller Atakale in Ankara and I've been getting the run around ever since. The distributor in Adana, Solitek, is now involved as well but I'm getting no satisfaction. Doubt is, apparently, being cast on whether the units I bought are genuine. How can I get answers. Who can help me.