Add-on is activated and loaded/present in my resources and behaviour pack. With no errors. It will run fine for about 3 days. Then I log in and it is missing as I get ?dirt block in its place. The correct behaviour/resource packs are present in the right folders but are not in my world. Over a couple of irl days of playing and logging in and out, the missing texture for the add on will disappear and reset my Add-on as if I have just loaded it in for the first time. I have been in contact with the developers who have told me that it appears that for some reason minecraft is removing it then re adding it. The telelantern pack is brought from the marketplace and other than being removed runs perfectly.