Here at step 3 https://yunohost.org/#/dns
(Advanced, not 100% supported…) Your YunoHost instance has its own DNS service, which means it will automatically configure its own DNS records, and that you can leave the setup to the instance itself. To do this, you must explain to your registrar that your YunoHost instance is the authoritative DNS server for your domain name.
Warning : If you choose this option, all configuration options will be done automatically, you will retain a good deal of flexibility, but if your server gets knocked offline you will run into many problems. Choose this only if you understand the implications.
so i want to go with this
i have setup my gandi glue and nameservers to my liking
and now i am lost