You could possibly try a -rescan or a -salvagewallet when starting the STRB client up with a command prompt or create a .bat with those settings.

Those commands "should" fix your issues but because it is also PoS I am unsure if it will also try staking at the same time so give -reservebalance=9999999 a try.

Also give the repairwallet command a try in the Debug console.