Hello and welcome to the Community, Shoisiettaiqu91!
Since this is a pure “customers helping customers” forum, we unfortunately do not have any access to internal system configurations or network tools.
Depending on your specific internet access technology, the options vary significantly. If you are on a DSL connection or a Fiber Point to Point (AON) line, you can use your own standalone third party modem. However, if you are on a Fiber XGS connection, Sunrise strictly blocks third party hardware, meaning you must use the Connect Box 3 and configure a DMZ to put your own router behind it since a true bridge mode is not supported. For HFC cable connections, your own modem is blocked as well, but you can contact the hotline to switch to IPv4 and activate the built in bridge mode.
For the exact technical requirements and a complete overview of all technologies, you should definitely check out the official guide on how to Use your own modem or router which covers all these details completely.
cheers cosmo