Sure. We will help.
There is no such limitation in clientcontrol as far as I know.
May I know the Modustoolbox and BTSDK version which you are using?
Could you please try to collect the debug logs using GDB view while you trying to provision the mesh device.
Also, please collect the device puart trace as well. please enable core and mmdl debug in the makefile of your application.
MESH_MODELS_DEBUG_TRACES ?= 1
MESH_CORE_DEBUG_TRACES ?= 1
"could not provision more CYBT-213043-MESH cards"
Could you explain what it means? Could you please provide me the exact steps that you are following and when it gets causes the problem?