Unable to verify contribution despite online and offline sources cited

"Your contribution has been declined. We have been unable to verify your contribution."

I submitted changes to correct a simple and silly bio mistake (twice), yet IMDb somehow fails to process it.

https://www.imdb.com/name/nm0880618/

Birth name (before correction:)

Edgar George Ulmer

Birth name (corrected:)

Edgar Georg Ulmer

Please confer:

https://en.wikipedia.org/wiki/Edgar_G._Ulmer

https://de.wikipedia.org/wiki/Edgar_G._Ulmer

Two separate extensive biographies written and published by Stefan Grissemann and Bernd Herzogenrath, respectively, confirm this. He was never named "George", only ever "Georg". Which corresponds with the fact that in Austria "Georg" is the correct spelling of this given name.