GL-MT300N-V2 not resetting to factory settings

I set the GL router to WDS(bridge) mode, and now want to change the setting for the router it attaches to. I’ve tried holding down the reset button for far more than 10 seconds, I get the middle light blinking, but I’m not able to connect to the admin interface.

Any help would be appreciated

Does the LED flash 4 times per seconds after 10 seconds? It should flash 4 times per second then you need to release your finger.

BTW, you should hold the reset button for more than 3 seconds when the LED flash twice per second and release the finger. Then the router will reset to “Router Mode”. You need to reconnect wifi/cable to get new IP address.