Hello,
We checked with the Garmin Pilot group and were told this is a known issue and were asked to share this information:
Recently we discovered an issue in the IOS version of Garmin Pilot that has caused NOTAMs to not be available while in the Airport Information page. We are currently working on a resolution, and an update to Garmin Pilot will be released to fix the issue. In the meantime, NOTAMs can still be viewed using the Widgets and selecting NOTAMS on the split map page.
Thanks,
Steve