Realm in iOS not generating End Portal Stronghold

After two years of game play in the realm we located where the End Portal Stronghold should be with Eyes of Ender. Ever recreated the world in creative with the same seed to located the stronghold, matched where we expected it to be.

Lot's of excavation only to find the End Portal Stronghold has not been spawned. All other significant structures have been, eg. Abandoned Mine, Undersea Monuments.

Please can you spawn the End Portal Stronghold in my realm.