To recognize documents with Fraktur fonts you would need a separate license which supports this feature.
Licensing & Pricing for Gothic/Fraktur OCR can be found via the following link: Licensing and pricing for Gothic/Fraktur OCR in ABBYY FineReader Server 14.
In the workflow properties you would need to choose Gothic text type and language (Old English, Old German, etc.). Choose Normal text type and regular language option (English, German, etc.) as well if your document also contains regular text.