Faded out green arrow in message

Greetings JT1995k,

It appears the number you're messaging doesn't support iMessage, which is why the blue arrow isn't appearing.

To help troubleshoot being unable to send messages, test after restarting your iPhone and after ensuring iOS is updated, as taking these steps can help clear up software issues. Check out those suggestions and more in the article below:

If you can't send or receive messages on your iPhone or iPad - Apple Support

"If you still need help

• Try to restart your iPhone or iPad.
• Check your network connection. To send a message as iMessage or MMS, you need a cellular data or Wi-Fi connection. To send an SMS message, you need cellular network connection. If you turn on Wi-Fi Calling, you can send SMS messages over Wi-Fi.
• Check with your carrier to see if the type of message you’re trying to send, like MMS or SMS, is supported."

It appears you're attempting to reply to an automated system for a survey. If that is the only message thread which is experiencing the behavior after taking the steps above, then it sounds like the issue may be with the system used by the service sending you the survey. Reach out to their customer support for further details.

Kind regards.