i have 2 transactions from xION accumulator with 1000 ION each
xion have 800 confirmations .... one i could use, the other is locked ... immature .... they happend on the same time ... what can i do

transactzion says: need one more mints added to network

I had same problem with a 50 block being stuck as immature. You have to wait until someone on the network mines the same value of the block. For your case, you are waiting for someone to mine a 1000 block... be patient and it will mature in time as the Zerocoin network grows...