If hot water does not do the trick, try using an air compressor connected to the bottom drip tube to see if you can get air flowing up through the drain in the freezer. We just did it this morning after having issues for several months. Ours is a top freezer. After a few short moments running the air compressor, the freezer drain started to bubble and some water and ice shot out. Then the air started flowed freely up through the drain hole. We kept the air going a few minutes and immediately tried flushing water down the freezer drain and whoosh, the water went right down. And I flushed a LOT down to be sure. We used a bucket and noticed that several tiny pieces of styrofoam came out with the water. That had to be what was clogging the drip tube!
Hey if possible can you link that video I cannot find it and this appear to be the only video I can find of my specific Fridge. I can't find the same issue on different refrigerators but things are slightly different
