The rapper allegedly made a deal with Fashion Nova — a discount clothing retailer — to do a series of brand promotions on his social media pages and through his music. According to legal docs, obtained by TMZ, Tekashi was paid an advance of $225,000 in October 2018.

The docs claim just 2 weeks after Tekashi got the wire, he was locked up … making him unable to perform his duties for the company. What’s more … they say Tekashi’s testimony during the trial totally torpedoed his ability to be a good brand ambassador for FN.

FN claims Tekashi was underhanded … he and his people concealed the entire criminal prosecution from them. In other words, what FN seems to be saying is that they had no idea Tekashi was a criminal.

Reportedly, FN says Tekashi never returned the $225,000 despite promising to do so. So now, they’re suing for $2.25M.

We’re not sure how that math work either.

Originally looking at 47 years in the bing on racketeering charges, since he snitched in court, Tekashi was hit with only a 2-year sentence. Recently, it was revealed he is .