Hi there tal106,
Thank you for posting to Apple Support Communities.
We're happy to help.
We understand you're having an issue with Text Replacement in iOS. We're happy to help.
It's great troubleshooting that your device is updated. Has your iPhone been restarted lately? If not, a restart is a great step in troubleshooting as well:
- "Press and hold either volume button and the side button until the power-off slider appears.
- Drag the slider, then wait 30 seconds for your device to turn off.
- To turn your device back on, press and hold the side button (on the right side of your iPhone) until you see the Apple logo."
Restart your iPhone - Apple Support
If you're still having an issue, we recommend getting ahold of Apple Support for additional troubleshooting: Get Support
Take care.