App doesnt know how to reroute?

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https://abrp.upvoty.com/b/report-a-bug/app-doesnt-know-how-to-reroute/
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App doesn't have reroute option and this could be the reason I might not pay for pro version. Reroute option must be added to this app. The second I change my route slightly it tells me "not on route" very annoying and makes me stop using this app usage for me. Common such a sophisticated app cannot reroute???