It may happen that you're unable to create a new submission. There could be several reasons.
You are a co-resident
Only the main resident can post submissions on behalf of the household. If you click on the share button and receive a message stating that you are a co-resident, you will not be able to start submissions. Ask the main resident of the household to start a new submission; you will then have the option to retrieve your details and share them with the organization.
Pending invitation
You may also receive a message stating that submission is not yet possible because not all household invitations have been used.
This means your co-resident has not yet completed their account setup.
Once they have done so, you’ll be able to submit the submission.