If you are unable to submit your expenses even though all required fields have been filled out, please check the following two scenarios:
If the subscription of your account was not renewed it will be possible to login and extract all needed data. It will however not be possible to add or adjust already uploaded data. This will result in blocking the upload of new expenses.
Is your expense linked to a trip? If this is the case, you probably do not have the permission to submit any expenses linked to that trip until it has come to an end. Please check the end date of your trip:
Is your expense paid with a 'company card'? If this is the case, your company has implemented a policy which requires that the expense needs to be matched to a transaction before it can be submitted for approval. For more information regarding the matching process, check out the article 'Matching transactions with expenses' on our help center.