'Help & contact' top left of your Ebay page is really useful for checking this kind of thimg.
By putting in 'Lucid', I got to the link below.
The relevant part for you is this:
The German Packaging Act
If you're a business seller with buyers based in Germany, you need to make sure you’re compliant with the German Packaging Act. This means you need to buy a licence for your packaging and make sure the details are registered. This applies to all business sellers with buyers based in Germany, whether you package and ship items yourself, or import prepackaged goods into Germany.
https://www.ebay.co.uk/help/selling/extended-producer-responsibility-business-sellers/extended-produ...
Essentially, business sellers do need a licence. As you don't have one, it would be a good idea to exclude Germany from the list of countries you will sell to.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)