G-SPEED STUDIO XL not visible to Adobe as scratch disk

I have a 64Tb G-SPEED STUDIO XL Thunderbolt 2 formatted Mac OS Extended (Journaled). About a year ago it used to work with Adobe software as a scratch disk but now doesn’t. Has anyone solved this problem for themselves? In Adobe it just doesn’t show up in the list of potential scratch disks. It shows up in Disk Utility. I’m desperate! Thanking you in advance!