Tap the Share icon , then choose Share to access iOS share menu.
The first time you share on your mobile device, you’ll be prompted to choose an export preset or manually select your export options (file format, size, etc.). These settings will be saved as the default for future exports. If you need to adjust them for any export, tap the settings icon , make any necessary adjustments, then click Continue.
Choose Print, then Select a printer, and follow the on-screen instructions. The options will vary depending on the printer selected.
Learn More: https://manual.mylio.com/topic/print-your-photos