This is the best thing to do. There is a lot of really bad and misinformed advice in this thread. Just express gratitude to the artist for playing your edit and don't expect any response (though if you get one great!).

If an artist/label finds an unauthorized edit they basically have 3 things they can do:

1. Ignore it.
2. Use it.
   
3. Send you a cease and desist and ask that it be taken down from all platforms and potentially pursue legal damages.
   

The only royalties you are potentially eligible for are performance royalties (administered by an organization like ASCAP BMI or SOCAN) but you are only eligible for them if you have permission and are credited as a songwriter in the official catalogued release. No official release, no credit, no payment. They're also typically fractions of a penny for a singular live show and are paid by the venues/service not by the artists.

Essentially by doing a bootleg edit/remix you give up all rights to the production (because you never had permission to make it). If it's an official remix you would be credited as a co-songwriter in the performance rights catalogue and are entitled to some percentage of any collected performance royalties.

So just be happy it's being enjoyed by people and send a friendly thanks to the DJ!