Can I change my Bitonic Savings bitcoin address?

Yes, you can change your bitcoin address by deleting the savings plan (using the trash can icon that is visible next to your savings plan) in your Bits account overview. After deleting, create a new savings plan with the new bitcoin address.

Changing your bitocin address is only possible when there are no more outstanding bundled purchases. If this is the case, you must first send the bundled purchases to your wallet, then you can delete the savings plan for which you want to change the bitcoin address and create it a new one with your correct address.