Good evening, a few days ago I bought the Archer VR1210V modem and the chromcast. The modem works very well for the internet but I have problems with chromcast. After a few hours my cellphone no longer sees the chromcast. To see if the chromcast worked well I tried to configure it using another cell phone in hotspot and in this case my cell phone has always seen the device without interruptions. It's probably a tp-link or firmwer configuration problem but I don't know what to do. can you help me? 

I'm sorry for my english