A few days ago, all my devices that used to connect to my router via Heim WLAN can no longer connect. I tried to enable the Gast WLAN and all the devices were able to connect there but not to the original Heim WLAN. I tried to change SSID and password of my Heim WLAN but my devices still were not able to connect. The single device that could reconnect (Google Chromecast) to the Heim WLAN has very slow speed. Sometimes it even stops loading the video.
For LAN, I have no connection issues. Please help me. I have a lot of devices that need wireless connection. I cannot rely on LAN alone.
