I know you spoke to Q Link reps already, but check on this site to make sure your phone is supported on their network:
https://qlinkwireless.com/byop.aspx
Also, keep in mind that Xgody is one of those budget Chinese brands that verges on being shady. There are many off-brand or no-name Chinese phones that absolutely lie about their specs (both in the product listings and also in the phone's system as well), so even though the specs might indicate that it should work on Q Link, the true specs might make it incompatible for some reason. Another thing is that these off-brand phones often use IMEI's that are swiped from other phones -- so the IMEI you enter might actually correspond to a completely different phone (and that phone would be compatible with Q Link, but not necessarily yours).
If you want to see more of what I'm talking about, check out YouTuber SMOOREZ, who likes to test these kinds of cheap phones to show the kind of shenanigans they pull. Do a search in YouTube for "SMOOREZ Xgody" to see some of those phones he's reviewed.