The hub is updated every time your repair progresses through the process, as well as, when your repairer sends a photo or text update, you will be notified every time this happens.
If a policy excess applies to your policy and it hasn't been waived by your insurer, then the excess will be payable upon completion of your repairs. Before paying your policy excess you should check around the vehicle to ensure you are happy with repairs. Any queries regarding your policy excess should be addressed in the first instance to your insurer.