That's ok - mistakes happen! The good news is that any information that is kept within the facilitator portal regarding your play experience, whether that's the session details, location, time cost or facilitator information can be easily edited and updated.
Simply log in, navigate to the area that the update is needed, make any adjustment and save! Changes can take a few minutes to upload but should be available within approximately 15 minutes.
For more tips on using the facilitator portal, see here.