Won’t upload to Instagram 06/09

Hi there,

I can't upload to Instagram from Lightroom mobile - it comes up now with this empty box and says 'share' at the bottom which I press but it doesn't do anything. I have a brand new secondary phone in which I downloaded Lightroom app onto and it's got the same issue on that ? See pic attached - can anyone help or advise ? I really need it to be working for my business. Many thanks