This is an emergency update that removes Freemius integration with insecure ajax methods.
Download the latest zip file https://github.com/Basicbydesign/airpress/archive/refs/heads/master.zip
Login to your WordPress admin dashboard
Go to Plugins
Click Add new
Click Upload plugin
Select the .zip file you just downloaded
Install now
Wordpress will advise you that the plugin is already installed.
Click Replace current with uploaded
See "Plugin updated successfully."
... Enjoy the rest of your day :)
If you can login to your server with SSH then do so and navigate to your plugins directory.
Download airpress-master.zip and unzip.
wget https://github.com/Basicbydesign/airpress/archive/refs/heads/master.zip
unzip -o airpress-master.zip
Please direct all support requests to the official WordPress plugin page https://wordpress.org/support/plugin/airpress/