I tried for days with no luck after taking apart my closet install and taking the driver down to my hub and setting it on top. Gave up and reset the Ikea equipment and just used the 5 button remote alone directly with the driver (the button paired fine with ST hub v2 the first try while the driver wouldn’t).
I hated the solution, but my Zigbee channel was on 24, so I had to do a factory reset on my hub and it set it to 19 on reset since ST doesn’t let you modify the channel. My driver is installed in my closet 30+ ft away through walls and I didn’t want to disassemble my trim that hides the wiring. It paired the first time after resetting the driver with no issues and didn’t have to bring it close. Some Ikea devices just don’t like channels 24/25, some are just fine with it.
Now I have to go re-join all my equipment and set up my automations all over again but at least everything works now.