I think some of those korporut henchmen were blowing smoke up your butt, either by ignorance or instruction to say so. From Spektrum, the AR610 is suitable for electric up through .90 (which implies glow) planes:

https://www.spektrumrc.com/product/a.../SPMAR610.html

However, the word "coated" in the item name gives me pause. I am unfamiliar with that term. Maybe someone else knows what it means and can explain if it relates to your situation.

Also, in case you weren't already aware, it is extremely important to isolate the receiver in a plane with an engine, to preclude damage to the electronics inside it from vibration. You need to pad your receiver with foam rubber sheets (Dubro, etc. makes products especially for this), to isolate the receiver from the fuselage structure.

I hope this helps (some).