By international standard, the wording of the payment form for credit card details may not be in everyone's favour. You can individually customise the wording of each field to your liking.
On the side menu, please navigate to your Editor under Customize.
Open the following folders (by clicking the the grey triangles):
Changing the "Good Through"
In the folder, you will find the expiry-date.twig file. Click on the pencil icon, above the editable text area, replace the Good Through in line 4 with your choice of words. Click the disk icon, which replaced the pencil icon, to save, and hit the green Publish button, once you are done with all your changes.
Adding another Language
For each of the files found on the payment-card-details folder, you can add an additional language, should that not be available in the drop down menu. Make sure to add your language version in each of the files found in that folder. To add a language which is not available in drop down menu, click the plus icon, which is to the right of the drop down menu where you see the globe icon next to the language. Once you have completed adding an additional language, hit the green Publish button for your changes to take effect.