When you download MoneyWiz 3 and sign into your SYNCbits account, MoneyWiz 3 will migrate your SYNCbits account to MoneyWiz 3. This is necessary in order to support the new features.
If after that you try to use your SYNCbits account in MoneyWiz 2, you will see a message telling you that you are using a newer version of MoneyWiz on another device. This is done to prevent any data damage because MoneyWiz 2 is not programmed to recognize the new features of MoneyWiz 3 (like crypto/forex accounts, crypto currencies in Settings etc).
What to do?
If you want to go back to MoneyWiz 2, please follow these steps: