Problem Deleting Volume to expand from 3 to 4 HDDs >> "SoftRAID application has stopped functioning properly"

I have a Thunderbay 8, with a 3 HDD RAID 5 that I need to expand to a 4 HDD RAID 5. It was intended to be a 4 from the start, but one disk was bad and had to be sent back for warranty replacement which took a long time. I needed to build it as a 3 disk RAID to make sure the software was working (I was having problems getting it to work).

To change the size, I followed the instructions here: https://softraid.com/faq/can-i-add-a-disk-to-my-raid-4-5-softraid-array/ and disabled safeguard and attempted to delete the volume, following these instructions: https://softraid.com/faq/how-do-i-change-my-raid-volume-to-a-different-raid-level/

When I do that, I get an error that says “An internal part of the SoftRAID application has stopped functioning properly. Please quit SoftRAID and relaunch it.” I have quit and relaunched SoftRAID four times, and get the same error. The volume continues to function properly.

I have linked screenshots and a support report in this dropbox folder: . I am using SR 7.5 on M1 MacBook Pro running OS 13.3.1.