Auto door sticking

It seems that every so often the motorized door sticks closed and then when it does open it pops rather loudly. Wondering if this just requires a greasing of the latch or is there an alignment issue.

The rubber seal isn't sticking, is it? If indeed it is the latch I doubt simply greasing it would do much.

Sometimes the door wont open using the buttons,you have to open it manually. I dont think the seal would be able to hold it closed. Happens in all types of weathet.

Yeah that doesn't sound like a weatherseal freezing up if it does it in all types of weather. I've never dug into the opening mechanism for the door so I can't be much help there.