Dispenser leaks only when dispensing water

Dispenser water pressure is low. Also, it leaks, apparently out of the bottom of the freezer door, but only when water is dispensed. We didn’t use it for a few days (only ice) and no leak.

I need basics. Wanted to remove dispenser assembly to look inside. Took out 4 screws but stlll not free. See it has "sticky" tape but want to ensure I don’t crack it.

An help appreciated.

Thanks,