Using 529 funds for qualified expenses at non-qualified international university

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Pay for On-Campus housing, live at home (Fall 2020) - Use 529 plan dollars?

For the Fall 2020 quarter, my third year DC is committed (by lease) to a room in an on-campus, privately run flat. The lease dates were changed from June 2020-June 2021 to Sept 2020-Sept 2021 as an option from the leasing company in May. All of their classes are virtual/remote. At this time, we’re considering having DC reside at home for Fall quarter, but continue to pay “rent” to hold his room in the flat for Winter and/or Spring. We are not being offered the option to cancel the lease, short of finding a sublet tenant (HAH!). We’re on the hook for the entire year’s rent. That being said, does anyone have any suggestions as to where definitive guidelines to help determine if 529 plan dollars can be used to pay for this arrangement might be found? Or, could we use some 529 dollars, based on institutional COA for living at home, to help defray the on-campus flat cost? (similar to what was suggested in http://talk.collegeconfidential.com/financial-aid-scholarships/2193490-can-529-…