Reset IBS M2 new wifi

I have an ibs m2 and it does not log in my wifi.How can I reset?My former wifi had another name. Perhaps that is the Problem?The first time login was without any problem

Hello,
Please understand that if the WIFI name is changed, IBS-M2 needs to be deleted through the INKBIRD app - IBS-M2 - The settings icon in the lower left corner - more settings - remove device, and then re-added after the phone is connected to the new WIFI. It cannot automatically update the WIFI/router information.