Cant go back to rewards room

why in the world are you not able to go back to the trial of sekhemas rewards room?! what purpose could this possibly serve? i now have to do it all over again simply because i went to sell my stuff to make room. dear god can you devs PLEASE FIX THIS?!

If you are in the Rewards Room then put excess stuff in your stash (normally near the entrance) to sell when you have finished the trial.