lun resize: New size exceeds this LUN's initial geometry
When LUN size is increased, LUN geometry (as returned to client) has to be adjusted. It is adjusted so that it remains compatible with old size and disk layout. This is not possible with new size you requested - geometry change may result in incompatible layout and client data corruption.
Apparently, the volume has space for LUN expansion. Without and with snapshor reserve, you can expand the lun by 58041MB. With complete snapshot reserve, you can expand the LUN by 29020MB. The reason under the first two conditions you can expand the LUN by the same amount is because the volume's fractional reserve is set to 0.
Without snapshot reserve: 58041m (60860399616)
With snapshot reserve: 58041m (60860399616)
With complete snapshot reserve: 29020m (30429675520)
I think your issue with lun expansion may be attributed to Qtree. What's the quota limit on the qtree? you may want to create a LUN on the volume (not qtree) and try lun resize.
The 10x rule was posted in several places but also disproven in another post (was news to me too). From priv set advanced run "lun geometry" and you can see the max size you can grow the lun which will likely be more than 10x.