I revalidated three times since 2006, and each time I didn't get the ELP on the form.
Why not, it only required a tick and a signature from the Examiner? Are you saying the Examiner did nothing each time and you didn't check what he had put on your revalidation form nor queery it?
The whole think is a bodge from start to finish, the ICAO intention was that airline pilots and ATCOs should have a minimum level of English to ensure safe communication on International routes.
There is indeed much confusion, poor communication from the CAA throughout, but it is not helped by making incorrect statements such as
Level 4 is not sufficient.
When it meets the fundamental ICAO "Operational" requirement and is the level held by many airline pilots.