Plen or Plein: How To spell?

The word Plen is misspelled against Plein, an adjective meaning "Full; complete."

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