HI everyone! I hope that…

HI everyone! I hope that someone may be able to answer my question. My sister-in-law says she cannot follow my posts from her phone. Says there is nothing to click on. Is this her phone or is there something I need to do to make it accessible from her phone. I know the Follow button is there, because others have been using it. Basically she can see my posts but can’t see any of the extra links on the side or at the top to click on.
Thanks for your help!