Dear Dominik,
Thank you for reaching out to us. To translate this button, kindly follow the detailed guide available at the following link:
https://www.joomshaper.com/documentation/joomla-extensions/sp-simple-portfolio/how-to-translate
If you have any further questions or need additional assistance, feel free to let us know.
Edit::
Please note, the override has been applied for English, not for German. Kindly check this, as I’ve fixed it now and ensured it’s added for German.
Let me know if there’s anything else I can assist with.
Thank you!