IMessages stopped working/not delivering and is now green

Hello xTh3r3sax.

Welcome to Apple Support Communities.

If I'm understanding correctly, you are having some trouble sending messages with your iPad. I will be glad to assist.

Please the information below to see if it helps from our article: If you can't send or receive messages on your iPhone, iPad, or iPod touch

   If you see a green message bubble

If you see a green message bubble instead of a blue one, then that message was sent using MMS/SMS instead of iMessage. There are several reasons for this:

• The person that you sent the message to doesn't have an Apple device.
• iMessage is turned off on your device or on your recipient’s device. To check if iMessage is turned on for your device, go to Settings > Messages > iMessage.
• iMessage is temporarily unavailable on your device or on your recipient’s device.

Learn the difference between iMessage and MMS/SMS messages.

Cheers.