If you want offline users to be able to submit the same again and again, without syncing, you must set the isMulti flag of your submitNoResponse() button to true. If it is set to false, then only the most recent form submission is sent and the others are dropped.

If you check and find that the isMulti flag of your submitNoResponse() button to true, then the multiple submissions are probably interfering with each other because data that is stored in a single cookie is being changed by each submission. You may have to change the way the information in the cookie is stored. See Avoiding collisions in multiple offline submissions.