Proof of completion - missing chars

Hi, the proof of completion images are missing some extended latin chars. The rendered image has a placeholder of crossed rectangle instead (as if the character was missing in the font that is being used). No need to say that such a certificate with my name misspelled looks lame.

Have a look:

Hi @Artur_Gracki ,

Thank you so much for bringing this to our attention. Please email to get that sorted.