valimaties

Hello everyone. I have a signal problem with my XD-V75 model. I have a digital mixer (X32 Compact) and I connect it to a TP-Link router to control it from my tablet. The problem is if I have my router powered on, the signal of microphone is interrupted often. Practically, I cannot sing. I changed the router's channel, signal power, microphone's channel... It has this comportment on each channel. I don't know what to do anymore...