Edit in Photoshop feature has disappeared from Lightroom Mobile

I have been using Lightroom mobile on my ipad for years and photoshop as well. A feature i like is using the "edit in photoshop feature" when i am Lightroom.  It seems to have disappeared. Advice anyone? I have the basic subscription. I have an IPad Pro 11 third generation. Advice please.  I use this feature. I am travelling and not able to access my computer.