Try going to asmedia and get an ancient book from her if the option appears
It's a bug with saves. There is a clean save from .45 in discord that will fix the guild mission.
And for the Iza thing, go to Maeve and do features and select unlock all events and gallery
It means it will be available on the Next Update
Go to the living room after going to the mercenary guild. It will start there
Go to Unison, Main street, in the pub in the morning
There's a Signal icon on the top right corner, there you will see the missions lists.
