Translation

Where to change the month name in “Answer before 11. June…” (example) at the Bonus questions section, need to be in another language, please. I can see in some earlier versions of Football Pool, it was like 2018-06-11.

I changed this code to follow the date and time settings of WordPress. But for the frontend of your site, you can override this date format with a constant in wp-config.php, e.g.:
define( 'FOOTBALLPOOL_QUESTIONDATETIME_FORMAT', 'Y-m-d' );

After every update of Football Pool, I have to hardcode translate the following text (can see in the PO file for my language (Danish), it’s all okay, but the translations are not displayed at all, can’t figure out why).
../football-pool/pages/class-football-pool-pool-page.php
You have to be a registered user and logged in to play in this pool.

Do you also create a new compiled translation (mo-file)?

p.s. It is best that you do not change the files in the plugin directory, these get overwritten on every update of the plugin by WP. So, if you want to keep your own translations, store your files in a sub-folder of the general languages folder of WP. Path in standard installs: /wp-content/languages/football-pool/

If your files are stored there, they don’t get overwritten. And these translations get preference over the translations in the plugin folder.

p.s.2. If you think that your translations are better or more complete, I can also include yours in the plugin install. Or I can ask the translation team to make you plugin translation editor.

I just changed my install to Dansk to see what happens and I indeed noticed that the shoutbox widget save button was not translated. When I opened the translation file I saw that this translation was labelled as “needs work” (“fuzzy” in older versions of Poedit). When I made this translation final and saved to a mo-file, the correct translation was shown on the button. Maybe you can check this for the other translations?

What also may help, is to update the po catalogue from the pot file before you translate. I updated your po file and uploaded it to my dropbox.