Hi,
1.Were icons highlighted are the only part that you failed to open? Are you capable to use photos, messages as well as the notifications?
2.Kindly verify you are running the latest version? Also following are some troubleshooting advices for you to narrow down the problem.
Troubleshooting the Your Phone app
https://support.microsoft.com/en-us/topic/troubleshooting-the-your-phone-app-82b6c6aa-544e-d4af-fd5d-2629a2a95835
3.Below are links regarding the most frequently asked questions and the system requirement for Your phone app.
Frequently asked questions about the Your Phone app
https://support.microsoft.com/en-us/topic/frequently-asked-questions-about-the-your-phone-app-7ccef61d-7bbd-2b26-77ec-76e9a358c25d
Your Phone app requirements and set up
https://support.microsoft.com/en-us/topic/your-phone-app-requirements-and-set-up-cd2a1ee7-75a7-66a6-9d4e-bf22e735f9e3
Hope this helps and please help to accept as Answer if the response is useful.
Thanks,
Jenny