Why Can't I Delete Text Messages On My Phone Any Longer

[Android Central Question]

Hello:
I can no longer delete text messages on My Samsung Galaxy Grand Prime Phone.
I started having this problem a few days ago. When I open a message, and I tap the delete button to delete it, the button does not get activated, and I am unable to delete the message.
I use the Marshmellow 6.01 version of Android. Please, what can I do to resolve this problem.
I am Ibrahim Ajayi

 

[ManiacJoe]

Which texting app are you using?

From the conversation screen, do you need to manually select the message first?