There is currently no "fix" for this issue as this is working as intended (See Mod Lyon's response). You may follow the suggestions found here Too many login attempts from your address (<--- Click on me!) to see if the alternatives shown do work for you. Alternatively, if you scroll all the way to the bottom of the link that I just shared with you, you will be able report your individual issue to Jagex.
Just know that they will not be able to individually respond to you.