Slovenian translation is awful and has no meaning. It would be translated back to english something like: "Slow euroajaian".
Correct translation would be:
- Kupuj evropsko (buy european in general/every day)
- Kupite evropsko (buy european now eg. For this product)
- Kupi evropsko (more personal - you specifically buy european now eg for this product)
I vote for 3. If it a label/brand/badge on a product. And 1. If this is US boycott slogan.
I will check it out