Second PPOE unstable after move to another address

I recently moved from one address to another. I use my own router with PPPoE session. In the previous location, The PPPoE session was flawless stable. At the new address, it drops almost every day, so I need to reboot my router. The session’s drops can be at any time of the day. The setting of my router was not changed after the move. Any idea how to solve the issue?