Hmm, it is working for me.
I note that the URL in the email you sent me possibly wasn't the correct one. The one from the drive config on the bitrix site was slightly different
#url = https://XXX.bitrix24.de/company/personal/user/1/files/lib/
url = https://XXX.bitrix24.de/company/personal/user/1/disk/path/
I don't know if this will make a difference.
Unfortunately beta.rclone.org is down at the moment otherwise you could try the binary I built...