Question: I've been trying to fill in some of my Additional Info in my free time. Under Amenities, when I tried to write in Bike Room, it gave me an error: 464 is not a valid email and I can't update if I leave that field populated. Under Access-Building, when I tried to write in, "How is the cable/phone room/ closet accessed?", it also gave me an error: 539 is not a valid email and I can't update if I leave that field populated.
The Association Additional Info fields are configured for email format.
In order to change the field type for those Association Additional Info data fields, go to the Settings > Custom Info > Association Info Fields. Select the data group (Building – Amenities in this case) and then click Edit to change those field types from Email to Textbox or Text Area. More information about Association Information can be found in the article: Association > Additional Info.