Sending photos back to Lightroom from photoshop on the iPad, please help

Hello, 

I am wondering if someone can help me. Up until a few weeks ago I was able to send a photo from Lightroom to photoshop, edit it and send it back to Lightroom on the iPad Pro 2021. However I am not able to do that now. 

I open a photo in Lightroom, send it to photoshop to do further edits, then I have to options, 'cancel' or 'send to Lightroom.' When I select send to Lightroom it does not send it, it used to but not anymore. 

I've uninstalled both apps, reinstalled them, restarted the iPad and chatted with Adobe but they don't seem to be able to help. I've also closed photoshop down after selecting 'send to Lightroom' but that doesn't work either. 

Is anyone else having a similar problem or can someone help me please?

 Thank you