Thank you for provided screenshot. It looks like you navigated to Dashboard > Plugins however we ask you to navigate to Dashboard > Appearance > Install Plugins.
If it is not helpful we would ask you to submit a request to our support team to sort this out. Thanks.
In case it helps others, the Mountainview theme updated successfully to version 1.3.0, but the Hotel Booking plugin update failed (still on 3.0.3). WordPress didn’t show an update notification for Hotel Booking despite having an older version.
I was able to deactivate the Hotel Booking plugin 3.0.3 then delete it. Since it’s a required plugin, WordPress prompted me to reinstall Hotel Booking and it grabbed/installed the new version 3.1.0. I activated the new version and all is well now.