Poor yields of units or resources from dungeons and jeweller's hamlets disappearance!
The subject describes the bug / problem very well.
I have now level 56 so I am not strong / advanced enough to produce even middle-level armies by myself.
Usually I got them from the dungeons. However, right now I got about 20 of the units in total doing 10 dungeons.
Also I found ALL jewellers hamlets disappeared so I may not get the saphires and, thus, advance in gameplay by upgrading my castle.
It's obvious solution to suspend the gameplay till the "features" to be corrected, I think.