My suspicion (just a hunch) is the Ahmadi Yiddish translation of the Qur'an was more about the political/symbolic significance of the language than a practical text. There are earlier Hebrew translations of the Qur'an, with manuscripts going back to the 16th century 1/3 https://twitter.com/Istanbultelaviv/status/1342117598931136512

and several more recent published translations (Reckendorf 1857, Rivlin 1936, Ben-Shemesh 1971). The Ahmadis did produce a partial Hebrew translation as well but its 1988 print date suggests it followed the Yiddish translation or was simultaneous. 2/3

The Ahmadi Hebrew materials are online http://www.alislam.org.il/CAT.asp?id=95 
as is the Reckendorf https://archive.org/details/HebrewTranslationOfTheQuranByReckendof/
and a more recent Saudi translation https://archive.org/details/174232c 
Very good thread on the Saudi translation here https://twitter.com/afzaque/status/1223982029831856130
3/3