Of course, @Sthlm71. Glad to help! While I’d love to take a shot at this wiring configuration, it would only be hypothetical without further real time testing of these wires and terminals. Often times, the wire running to your entry door location will indicate what color wires are providing power to that location. With there being many colors of wires here, if those terminals are not labeled Front, Trans, Rear, etc. it will be difficult to know which are intended to connect. As I only see two terminals with wiring connected (OF, T3), it is an assumption that these would be the active leads.
The Jumper Cable pictured above is not what the Jumper Cable for the Video Doorbell Wired should look like. Check out this Help Center article for the video of installation to reference this part for install, which should be included in packaging.
If it is not, our support team can help you obtain that part quickly. I recommend also reaching out to them with the link to this Community post for best resolution or install tips on using this chime kit. Please give our support team a call at one of the numbers available here. We’re taking additional steps to protect our team and help reduce the spread of COVID-19, so this has resulted in longer than normal wait times. If you are outside of the US, please read our response to COVID-19 here to see how to contact support.