Iowa Democratic Party Chairman Troy Price said Monday that there were some reports from precinct officials that they couldn’t log into the app during the first-in-the-nation caucuses.

He said a team of troubleshooters is working to address any technical issues.

He added that the party has alternate ways for precincts to send in results, including a hotline.

“We’ve had an app before, but we’ve also had a hotline before, and folks have had the option to do that, and so we expect that we’ll be able to report the results in a timely manner this evening,” he said.

The app was designed to allow for the quick filing of results, and the issue appears to be the result of different PINs used for early testing and caucus night logins.

More must-read stories from Fortune:

—2020 candidates’ positions, and records, on economic issues that affect women
—Bernie Sanders wants the future of the far left to be female. Is that enough?
—Michael Bloomberg’s radical plan to cut prescription drug costs
—Fortune Explains: The debt ceiling
—Millions have been purged from voter rolls—and may not even realize it

Get up to speed on your morning commute with Fortune’s CEO Daily newsletter.