usually reside within {billing_country}. (optional)

There haven’t been changes, in the EU VAT Assistant, that could affect the self-certification field. Most likely, the issue is caused by some JavaScript error that prevents the scripts from the EU VAT Assistant from running correctly. If this is the case, you can use the browser console (Chrome: https://developers.google.com/web/tools/chrome-devtools/console. Firefox: https://developer.mozilla.org/en-US/docs/Tools/Browser_Console) to see what error appears and where it comes from.

If you purchased a support plan for the plugin, we can also investigate the issue for you (such service is not available as part of the free support provided via this forum). In such case, you can contact us via our contact form, at https://aelia.co/contact, and we will send you further instructions.