Had the same problem. Think there's an in app support page that should get you access.
When I click get code it looks like it’s loading but then just goes back to the Same screen?! Will try again later..
Yes i get that pop up box too. And thwn qhen i click on that second get code, it tells me sorry no longer available
Love veryme best mobile rewards than any other network at the minute, wuntu used to be good glad I left three tho.