Please make sure that you always keep your plugins up to date, among other things to protect them from automated hacker attacks. You can find detailed instructions on updating plugins at WordPress.org. (The instructions are currently only offered by WordPress in English).
Instructions for updating the WP-ImmoMakler plugin
You can download the update in your WordPress backend under "Plugins". (WordPress backend -> Plugins -> Installed plugins -> Update).

Another way to access the updates would be via "Dashboard -> Update".

Support license
A valid, active support license is required for an update.
This is included in the purchase price for the first twelve months. After the support license expires, we offer our service package for support and updates. Please note that you can continue to use the plugin for an unlimited period of time even without a valid support license. If your support license has expired or your license key cannot be activated, please contact our support team.
Update newsletter
If you would like to keep up to date with the latest developments and new features of the WP-ImmoMakler plugin, we offer you our update newsletter.
The CO₂ emissions resulting from the newsletter are fully offset by us.