Interesting i just received 947 coins says" minted" but it keep says stacking not Active?
Yep, that's been happening to me.
Having identical problem

getstakingstatus

{
"validtime" : true,
"haveconnections" : true,
"walletunlocked" : true,
"mintablecoins" : false,
"enoughcoins" : true,
"mnsync" : true,
"staking status" : false
}
My coins have staked twice instantly after restarting the wallet then after 91 confirms mintablecoins remains false.
Have only been able to stake twice due to mintablecoins getting stuck on "false". Restarting wallet again many times has not worked again.