OK you have now presumably installed correctly, and activated, the multiadapter extension. Can you please tell me the following:
1. You previously reported an error about the qrcode library not being loaded. Do you still get that error?
2. What do you get when you type the following in your console? typeof jQuery.fn.qrcode
3. Do you see any errors now in your JavaScript console?
4. Could it be that you have done the same installation mistake with the main plugin? The main plugin should be installed either by uploading the zip file via the “upload plugin” button or directly from wordpress.org via the admin interface. (You could unzip the plugin manually, but in that case you need to make sure that the directory is named “wallets” and that the file permissions and user ownership match those needed by your web server.)
Let me know.