Ai assistant not appearing on IPad

Hi

i I have the latest edition of the adobe reader app. I have the Ai assistant add on, it works on my pc but on my iPad I have no option for it? I keep seeing post saying it's available across all devices now but I don't know how to get it up on my iPad app for the adobe acrobat. 

can someone please advise on how I get the tool up when I'm in a PDF. The little bubble for it does not appear anywhere for me. 

thank you!