Copy paste shortcuts - command c / command v don’t work on web forms (Chrome)

Welcome Serikjan240,

Thank you for using Apple Support Communities. Based on your post, you can't use the shortcuts to copy/paste in the Chrome app on your iPad Pro with the keyboard. We'll do our best to assist.

When we tested this in the Chrome app, it was working for us. If that's not working for you, then we'd make sure to follow all of the suggestions here: If an app on your iPhone or iPad stops responding, closes unexpectedly, or won’t open This walks through updating and reinstalling the app, if necessary. Which should sort out the issues with your shortcuts.

Also, make sure you don't have any contradicting text replacements for command + c and command + v: Save keystrokes with text replacements on iPad

Hoping this helps out, take care!

See >>> Learn iPad keyboard shortcuts - Apple Support