Cannot link Internet subscription to my mobile account

Hello. In january started an internet contract for my new house and I remember linking it to my mobile account too. However now checking the app for the internet invoices, the other subscription is not there.

I tried doing the steps to link it on the website and on the app too but I can’t get past the “choose your address” step. My address is displayed but it won’t let me select it or go further in the process.

Happy if you could help me fix this.