There isnt a specific issue ... there isnt any errors or compile problems.. these platforms are not working after create an ipa, both released or not released.
"Admob, Facebook, Startapp (Banner Ads)
Applovin, Unity, Vungle, Pollfish (Rewarded + Interstitial)
MoPub, HyperMX, Tapdaq (Mediation)
Flurry, Tenjin (Analytics)"
All sdk keys and implementations at platform sides are absolutely correct.
Could you please create a sample game on Stencyl and show us which platforms are %100 working with Enhance SDK?