When One goes thru the Video Add-on List, place the Cursor(Mouse) over an Add-on and Click OK and Hold until a window opens with Options...
Click - Information, another Window will Open with more Options... Look at the list, if Auto Update has a Green or Blue Dot to the Right of it, Click it so it isn't Lit...
Go to "Update" and Click it, another Window should open> This will give a list of possible Repos that the Add-on is in, find the one with the latest Version Number, if there are more than one available, click the Top One and after a sec or two One would/should see an Add-OnUpdated msg either in the bottom Right-hand Corner or even in the Upper Right-Hand Corner...!
If the the window shows a list of Options, look and find OK on the screen and Click it... Again, it should show Add-on Updated...! If it gives One a small Circle with an "X" inside, just wait a tad longer...!
Try the Add-On and see if it works, if it doesn't go back to the steps and try other options...