I have been having this same issue for going on 8 hours.
I have rebooted my router,tried mobile RS, changed my password. Seems odd that i can log on to the main page of Runescape and access my account info & not get a to many log in attempt message. I also tried to log into EOC, because I mainly play Old School - same error message there too.
I do not think it is an unreasonable request to expect this to be fixed in a timely manner.
8 hours to me- is NOT timely. If this is a "security feature" it should work for all players all the time not block those that are unfortunate enough to run across this "bug"
13-Jul-2020 18:40:50