Hi! Does anyone know what you earn from Artlist/Artgrid selling videos and sound effects?

I just need to get out some frustration about iStock. I uploaded my files their until a couple months ago. They have never payed well for photos, I know that. But video sales has been ok, until last november/december. Suddenly all my 4K material, shot with $25.000 drone equipment starts to sell for $0.40. Ten videos sold for that price. I contacted them and the answer was that they offer a special subscription that allow this, and I cannot opt out of selling in this category. The last four months I have stopped uploading both photos and videos to them. Sales at Adobe Stock, Pond5 etc goes as normal, $25 to $100, depending on resolution. For anyone reading this, I suggest not to upload anything to iStock, you are better off.