Accidentally bought a large amount of ground espresso. Help.

I meant to buy 5 lb of whole bean espresso and accidentally bought 5 lb of beans ground on espresso setting. The grind is too coarse for my set up (Cafelat Robot) and the shots pull really fast with tons of channeling.

I haven't been able to find someone who wants to take the coffee yet and frankly I'd like to be able to use it if possible since it was $90. I've tried putting more into a shot (23g instead of 18) and tamping super hard but it's still pulling pretty fast (40g in ~20 seconds). I usually shoot for 40g in ~30 sec. The result is not terrible but I'm wondering if anyone has creative ideas for working with what I've got.

Thanks for reading.