I just tried again, using the Edit drop down and paste because when I held my finger on the screen to pull up the copy/paste/cut/etc options on my phone, nothing came up.
Now though I'm getting an error at the top of the message textbox highlighted in red that says, "Your browser doesn't support direct access to the clipboard. Please use the Ctrl+X/C/V keybord shortcuts instead." --> which I usually do, just can't on a phone. Also, I copy and paste in my browser all the time, so I'm not sure what that means.
If this sounds like a problem just with my phone, that's fine. I'm a bus rider so I have a lot of time to kill working on collabs and stuff which C+P helps with when I want to post those or with things like that, so I just thought I'd ask. Oh well! Thanks for having a look for me though!