A. Try using a different text selection method. Instead of long-pressing to select text, try double-tapping on the text to see if it allows you to select special characters or numbers. If that doesn't work, copy the text to a different app (like a notes app) and then paste it back into eBoox.

B. Check if there are any updates available for eBoox in the Google Play Store. Sometimes, bugs related to copy and paste functionality are fixed in newer versions.