A major wallet update is coming for SUB1X. From block 85k onward, the reward will increase from 0.01 to 0.05. Consequently, the old wallets will be incompatible and the MN/PoS aspect will seize to function once the new block rewards are in effect. The wallet updates need to be applied to both the local wallet and VPS. You may also notice the CryptoBridge wallets going into maintenance because these also require the update.