If you use the loan more like a credit card, you might be better off just not entering that 1098.
Home mortgage interest is only deductible if the loan was used to purchase, build, or substantially improve the home.
Unless you took funds out to make a major renovation, or part of the loan includes part of the original loan (the loan you took out to buy the house) it would not be worth trying to get through the section to enter the 1098.
The program would have no way to calculate your average balance, which also could limit your deduction.
If you think the interest would qualify, please continue the thread and give us additional details.
HERE is IRS Pub 936 which explains the requirements
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