On April 23, 2023, Apple finished the review of version 16.4.1 of PDF Notes S & PDF Notes C and they became Ready for Sale. If the receipt is not automatically renewed when updating, please use the Settings - License - Refresh Receipt (License Restore) menu.
On April 22, 2023, I uploaded version 16.4.1 of PDF Notes S & PDF Notes C to App Store
PDF Notes S https://itunes.apple.com/app/id961336139
PDF Notes C https://itunes.apple.com/app/id1459073729
This version fixed bugs.