Apparent incompatibility of WD My Passport Ultra 2TB Portable Disc Drive

I now have two portable hard drives that have incompatible software that OS 10.15.7 Catalina will not even recognize (their icons don't even show up on my computer's desktop. One of the drives is a WD My Passport Ultra for Mac and the other is a Seagate Portable Drive. Both are 2 TB capacity. Both are supposedly for the Mac and I got the same message/prompt on both drives when I attempted to use them ("the software needs to be updated in order to use these drives.) When I attempted to contact the vender I got ...Crickets. What can I do to resolve this apparent impasse. Does WD and Seagate even have a fix for this issue? Does Apple have a fix? I need to know so that I can provide the images to my clients (images that are too large to transmit over the internet. I can't keep purchasing portable drives with hopes that eventually I'll find one that is really compatible. I am extremely frustrated because I've never had this issue in the past.

I do agree that reformatting the Drives might be the answer. I the problem is that neither of the drives show up on my desktop when I connect them. The drives light up and are pulsing, but are not showing up visibly on the desktop. On of the drives is giving a very annoying beeping sound. One that I have never heard with previous portable drives that I successfully used.

Thanks for the help. Found the problem...It was me. Too many Drives on-line. I unplugged a couple and the portable drive popped right it. Thanks for your suggestions and Lesson Learned. Don't over tax your computer. Thanks again.