I still have issues with Import. I have a cloud customer who has this issue.
Early January I had elevated my privileges to 'Cloud App Admin' temporarily and got the token created and import worked well until privilege's were downgraded.
Later I discovered we have to have 'reports reader' additionally, so went ahead to order as dedicated service account that has both 'Cloud App Admin' and 'Reports Reader'. But import doesn't work yet. Most times I get 403 and occasionally I get 502 in terms of error. Any help is appreciated. Thanks in advance!
The additional role (Reports Reader) is required due to a change made by Microsoft. More details can be found in the earlier message in this thread -- https://community.flexera.com/t5/FlexNet-Manager-Forum/O365-errors/m-p/127784/highlight/true#M4148.
Please try with these two roles and see what you find.