Why won’t it work

I am going to make this simple, hopefully.

Messages should have access to standard Emoji symbols.

If you have an iPad Air 2 or iPad Mini 4, there are NO Apple memojis or Memoji stickers for these iPad models.

The hardware in these iPad models does not support Apple memojis, at all.

Not sure about why no access to your Photos app images or game plug-ins.

Have you tried a simple hard reset of your iPad by holding down both the Home and sleep/wake buttons simultaneously until your iPad goes to black and restarts with Apple logo, then release the buttons?

Hello,

Can you please elaborate more on your question?

Writing an effective Apple Support Community post

huh?

What?

I do not understand your iPad question/issue/problem.

Still do not understand your question or iPad problem/issue.

Okay

Now I understand.

One more question, what year and model iPad do you have and what iOS version is it running?