I'm not able to respond to the reviews that merchants have dropped on my app
when I go to the View and Reply to Reviews button via Shopify Partners, it takes me to the app listing page but I'm not able to post anything, it just opens the set of reviews.
Is this an access issue? But I used to be able to do it before
I'd recommend reaching out for help in your partners dashboard for more assistance. You can do this by selecting the "support" option in the sidebar.