Hi everybody, My Internet left many times per day on my TL-MR6400 v4, just bought.... When the problem happened, all lights of the modem are on. I saw many users have same problem with different model

I have recently bought a TL-MR6400 for use as a 4G router. We have a typical signal strength of 75% which sometimes drops to 50%. For the most part the router works really well but once or twice a day