Hello Harakoni.
Thanks for making changes so I can edit my own user page.
Concerning my talk page, is it possible to make it in "normal" wikicode ? because I sincerely dislike Flow...
Also, are notifications enabled on this wiki? Is there is a template similar to Wikipedia's {{ping}}?
Wrt to the talk page, not afaik, though its not something I've looked into. There are still some talk pages that still use normal wikicode, but only pages that have existed for a long time. Likely something grandfathered in.
As for notifications, pretty sure that notifications for whenever your user page is linked to are on by default, though they can be toggled on and off according to your preference as well. I'll test it and you can see if you get a notification.