I subscribed for shares when Avis UK was listed in London 20 odd years ago, and had a Founders Club 25% AWD code. When Avis UK was taken over by Avis Corp, this was replaced with a 'Friends and Family' 25% code which was embedded into my Avis Preferred profile. This code has now stopped working.
The Twitter team have been trying to help, but without much success. Is anyone else in the same or a similar position ??