Fix Vigor2915 & Yeastar Config

Job ID: 40460491

Budget: $10 – $30 USD

hello ,,
i have a Vigor2915 and yeastar s20 and switch
for sure i changed the ip address ,, but while arrange my switch i can't reach wifi on with Vigor wifi also i can reach yeastar and vigor with normal ip address i must use my ddns ,, it was working good on any switch or route in my home but now i can't and i dont want to change ip's is there a solution ?
thanks