There is actually an import option in 3.7.3. It is on one of the many screens that are confusing to get to, has no name, and moving “back” from it frequently takes you to a screen that you didn’t come from.
At the bottom of the unnamed screen is an option called, “Add/Delete/Rename GPX on MAP.” That screen has “Add URL” to, I believe, import a GPX file from somewhere on the internet. I’ve never tried it. Like many things in BLEvo, it is difficult to find and obscure in application.
BLEvo is one of the most poorly designed and most confusing apps I’ve ever seen. If it weren’t for the detailed, techie-nerd wattage data I’d never use it. It’s impossible for me to recommend BLEvo to anyone who just wants a GPS/mapping/route app.