??? I've used almost nothing *but* OLCI on a variety of airlines for several years now without issues. The biggest issue I'm likely to have is user error: a dead phone battery, a failure to save the BP as an image while I was at a good data connection, etc.

A check-in counter is for that 1-2 rare trips per year where I have to have a checked bag with me.

Even airlines that tend to screw everything else up (United) have a decent-enough OLCI process.