Hi.
(First, perhaps you could say hello like me)
(Second, your are on the French language section of the forum, so you may speak French)
It seems you are brand new do Proview, learning curve is long, you have to be patient and keep your self control.
For the "remove lock" I have in fact no idea why it doesn't work for you because push the button is ever works for me. You can try to ask Claes (which is the "father" of Proview), but before explain the more precisely possible the context which lead to the message.
Il semble que tu sois novice en matière de Proview, le processus d'aprentissage est long, il faut être patient et garder son calme.
Pour "enlever le verrou", je n'ai pas d'idée particulière sur le sujet puisque l'appui sur le bouton fonctionne toujours pour moi. Tu peux essayer de demander à Claes (qui est le "père" de Proview), mais avant expliques le plus précisement le contexte qui déclenche le message.
Have a good day.
Bonne journée.
Regards
/Bruno