App loads, but won't create a route

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/report-a-bug/app-loads-but-wont-create-a-route/
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using the app on chrome + windows 10; also Android ver 4.2.8 (1010).

Logged in, enter starting address, ending address, hit the big button. It spins, then stops spinning. No route/plan shown.