I'm having the same "cant link accounts" issue with Uber and Aeroplan. the last time I used Uber was in Amsterdam..
I think the app thinks I'm in the EU because the currency shows euros if I click promotions.
There is no Uber in my current area, My Uber account is registered to my Koodo phone number.
Anyone else that's having this issue, was the last place you used your Uber app in Canada, USA or somewhere else?
I'll be headed to a city with Uber in a few weeks and I will try Using Uber to see if that fixes my location issue.
Even when I pull up the city Regs it comes up with Poland which I've never been to.