Update: this app has now been through three submissions. Build 1 was reviewed within two days and rejected. Build 2 (submission ID 2de3e8b9-de0c-453a-a225-d2ceae0927ec) sat in Waiting for Review from Oct 13 to Oct 28, then was rejected under 5.1.1(iv) for the location pre-permission screen. We fixed that the same day (button renamed to "Continue," skip option removed) and resubmitted build 1.0.0 (3) tonight with a reply to the reviewer.
New submission ID: 2de3e8b9-de0c-453a-a225-d2ceae0927ec
Would appreciate any help avoiding another multi-week wait on the resubmission.
Apple ID: 6812857553