Iphone 2 shows 2 start times

Iphone 2 shows 2 start times

Hello to all who reads this.

I have installed a zoho account on an iphone but it shows 2 times a time (see example picture). 1 is the time entered in the calendar and the other is a time 1 hour earlier with +1 gtm. Both the calendar and the iphone are set to amsterdam as timezone.

Is there something which can be changed in order to get just 1 time?

Thanks in advance