Issue with package name in unity editor project settings

We use package name: manastorm.spacehorse. We were working in 2020.3.24f1 before the Unity update After updating to 2020.3.35f1, Unity requires you to write com.manastorm.spacehorse in the package name field. If we build an application with package name com.manastorm.spacehorse, almost nothing works in the game. We cannot change the package name, since our game has been on Google Play and the App Store for a long time. What can be done to build the project with the old package name?