There are plastic connections at both ends; Hopefully neither are broken. Did you watch both videos all way through?
If the FOB with it's air pressure ~ vacuum system and the key inserted into the drivers outside lock BOTH work correctly it would seem you do not have the cable run correctly. If either of the two lock/unlock ( FOB and key) do not work then there may be an internal problem with the locking mechanism.
That is unlikely if all was working before you removed the door panel.

As long as the panel is removed you should reinforce the pull handle before completely reinstalling the door panel. pull reinforecment GO TO POST #80 Thanks John!

Good Luck.