There seems to be some minor bug that licences disappear and appear again. Few hours ago two of my lisences disappeared, from 8 to 6. After doing adventure for 30 minutes those two missing licences were returned back to 8.
Did not buy any new generals, buildings, have been had same amount of mines for weeks. Not sure if you have some repair scripts going on at background or why it was fixed at itself. Just thought I should report this, just in case.