Regner or Reigner: How To spell?

The word Regner is misspelled against Reigner, a noun meaning "One who reigns."

Word contains consecutive vowels 'EI' in between alphabets r & gner is misspelled as 'E' as letter 'I' is phonetically ignored
Wrong Spelling:  r-e-gner 
Correct Spelling:  r-ei-gner 
Explore spell check of Reigner to spell without errors.