Can I reallocate money from one product to another, e.g. from TopZins to Invest?

Yes, a transfer between accounts is possible as long as both accounts are held at the same custodian bank.

Moreover, transfers can only be made between Ginmon TopZins and Ginmon Invest accounts, regardless of the direction. Additionally, a transfer between Ginmon Invest accounts is also possible. Switching between other products is not possible.