Hour gap between activity registration and calendar display

[e-peltier18]

Hello,
I don't know if this problem has already been pointed out : when I register a new activity on FarmCalendar, it is displayed with a +2-hour gap in the calendar tool.
For example :
I registered a new activity today at 10am

In the calendar tool, it is displayed at 12pm

The same occurs when I put an end time : both hours are delayed by a 2-hour gap when displayed on the calendar tool.
Any idea why it occurs ?
Thank you !