My face time shows waiting for activation ever since I changed my Apple ID

Hi there, juliefromdubai!
Thanks for reaching out to the Apple Support Communities! It sounds like you changed your Apple ID and are unable to activate your FaceTime and I am happy to help out! If you have followed the steps in this article to Change your Apple ID and are still seeing the activation message, I suggest taking a look at this article with the best steps to follow If you get an error when trying to activate iMessage or FaceTime. This article will guide you through the troubleshooting steps to take, as well as what to do if you continue to have an issue activating.
Also, take a look at this article for more information: If you can't make a FaceTime call on your iPhone, iPad, or iPod touch - Apple Support
Take care!