Kyle T. Webster Megapack brush set not working in Fresco

Hi there, I just downloaded Kyle T Webster's Megapack on to my iPad Pro which is less then a year old, when I uploaded them into Fresco all the brushes are coming up as unsupported. When I close the app the brush pack then disappears from Fresco. Please can you help me fix this as I'd really like to use these brushes for some work I'm doing. Thanks so much!