I have also problem with WIFI connection of my Samsung A50 and GoPro HERO 7 Black.
Bluetooth is paired, no problem, but it is impossible to connect with WIFI.
Sometimes I can see the WIFI from camera in my list of WIFIs on my phone but I cant connect.
GoPro App updated, Camera updated, Phone updated. Tried factory reset, clear WIFI list, Delete camera from App, Airplane mode, everything...
I tried it your way @TimDH0252 and it worked until I got to the GoPro App, the GoPro was connected, the App said the GoPro was coupled, GoPro said it worked but then when it actually tried to connect it didn't do a thing, the GoPro was not visible under the Wifi tab of the A50, have you got any ideas? It's such a bummer that it doesn't work. I bought my A50 yesterday in the hopes it would do better than my old Huawei Mate 10 lite, which had connection problems with the GoPro, but now I can't connect at all.