Hi Thomas,
Thank you for your inquire.

The plugin can be translated using POEDIT or Loco Translate easily. I suggest installing Loco Translate, since it's within WordPress and it has a simple UI.

If you want to use POEDIT then please follow these instructions:

1. Download Amelia from our TMS Store and save the ameliabooking.zip file on your computer.

2. Unzip downloaded file.

3. Download and install POEDIT. 

4. After that, open the program and open the file from the extracted folder on your computer ameliabooking/languages/en_US/wpamelia-en_US.po.

5. Translate all the strings on your language.

6. Save the file as the plugin suggests (the language code; for example wpamelia-id_ID.po if your language is Indonesian) and it will generate a new wpamelia-id_ID.mo file. You can find your language code here. 

7. Go to ameliabooking/languages/ folder and create a new folder. Name it as the language code for your language (in our case, for Indonesian, it is id_ID) and then copy these two files called wpamelia-id_ID.po and wpamelia-id_ID.mo into it. Proceed with copying the whole folder id_ID back to your website in folder ../wp-content/plugins/ameliabooking/languages/.

Of course, you will use language code for your language (we use Indonesian language, and its language code "id_ID" is just an example).

When you finish that, it would be nice to send us the translation, so we can include it in our next major update so you don't have to copy this folder from local machine on every update.

Hope this helps.

As for the Woo:

We do have integration with WooCommerce and WooCommerce supports various payment gateways, so you can use Woo's payments system that you like.