I found a solution that worked for me. I use an Android Phone and Google Chrome as my browser. When I tap on sign in with RuneScape Account and the browser overlay appears asking for the account credentials, there were three vertical dots in the top right of the screen. Tapping those dots and selecting the option "Open in Chrome" then opened the sign in window in the Chrome app. Signing in there worked perfectly fine as opposed to he browser overlay in the OSRS app. Hope this works for others having the same issue. Cheers.
Edit** I guess this solution was posted in the page before and I didn't see it lol. Oh well.
- Last edited on 15-Sep-2021 00:13:47 by Gazlowe