Worker intentionally turning off mobile ordering?

My local subway started staying open really late and until last week I could order on the app right until closing. Now, the app says “store closing soon” after 11pm and won’t let me. When I go in, the guy claims he doesn’t know why this is and will claim he gets orders all night. But while I’m there, he only gets delivery app orders

When I go on a different night, different guy working, it works no problem. Problem is, it’s only 1 night a week when this occurs because they other guy picks up a ton of overtime

Is it possible for a single worker to shut off mobile orders just because he feels like it? He’s a nice guy and really good with making the food, but I literally have to pay double the price to get a sandwich if I don’t use my deals. Again, he claims he doesn’t know why this is happening. But it’s only when he’s working