I followed the steps in the video and i dont know why but the texture is not showing on my model, and i searched for the same question in case somebody else asked and i found your answer and did checked all the instructions you gave to that user and still dont work. I will attach some prints. Thank you so much!
Ok a small update:
Managed to change the material slot with image slot and now it appears to work but when i switched to object mode like in your video my mesh is still white. Here are some snapshots.
