Door started not locking with others or remote.]will lock from inside and others with remote. Today will not open with inside handle drivers door or remote. I am locked out of this door now.

If you can hear the central locking mechanism in that door, then a linkage inside must have come adrift. You would have to remove the panel and look. It appears to be a known issue!!

[Vivaro] - Side sliding doors won't open

https://www.vauxhallownersnetwork.co.uk > threads > s...
Jan 20, 2018 - Hi, My Driver door, passenger door and rear doors all open but ... in and out of the van today opening and closing the side doors so why ...

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  [Vivaro] - Slide door not opening

  https://www.vauxhallownersnetwork.co.uk > threads > s...
  Dec 9, 2013 - On the inside of the outer door handle there is a plastic link that holds the cable in place. When its all working, the handle actually pulls on ...
  
  

I had exact problem Santa Fe 2007 2008 lock was stuck in locked position and door would not open from inside or out. All other doors would unlock with auto key remote. Carefully work the inside lock towards the open position as you lock and unlock the door with the remote. As you press unlock try to assist the lock to open. I did this a few times and the lock became free to the open position and all worked perfectly after this.

My friend just had this problem and he reached in and pulled the inside door handle back as far as it would go, and then let it go, allowing it to 'snap' back. For some reason this fixed it. We have no idea why. By doing this on one door, both rear door locks freed up and the rear locks are now working. Before, both rear locks were stuck and you could not open the doors from the inside nor the outside. Not sure why it works, but maybe it will work for you!

turn key twice when opening, ie turn right. once drivers door will unlock, turn twice passengers doors will unlock, and locking is turn anti clock wise once will lock all doors, turn twice will set door dead locks.dead locks will stop openand lock internal button working and handle from opening door. the same actions can be applied to the remote one press drivers door, two press passenger doors, press and hold unlock button for 5 seconds and rear window will open.

Broken wire in harness feeding door, see other posts

need to replace door lock actuator.

the door lock actuator is defective, they get really hard to move when they go bad, that is why the difficulty with the key.

Your Beetle might be German in name only, those things are built in Mexico.

Sounds like the plastic clip on the lock/handle broke/fell off;)
http://en.allexperts.com/q/Volkswagen-801/Removing-interior-door-trim.htm

sounds like the rods are disconnected the clips hold the rods in place the latching mechanism holds the handle in place as well did you replace the speakers or did a shop? if a shop did then they caused this if you did then you may have caused this either way untill you reattach the rods none of it will work. you will have to manually open the door at the latch from inside teh door behind the panel.