[uMap] Edit / Changer OSM Map impossible

[Cees Geuze Information Design]

Hi there,

I have placed this question on a number of forums for a couple of days, 
but no one seems to understand my problem or can help me. This list was 
adviced by the dutch 
https://forum.openstreetmap.org/viewtopic.php?pid=754836#p754836 so you 
are my last hope...

My Problem:

A month ago I created a Map which you can see on 
https://umap.openstreetmap.fr/nl/map/de-oude-dorpskern-noordwijk_321214#17/52.23351/4.44803
I have to change some things, but I am unable to edit the map anymore. 
It is not in My Maps and when I open the link to the map there is no 
pencil icon to click on and change the content of my osm-map.
Can anyone please help me how to get control over what I created in your 
beautiful environment?

A reason might be that I have to give permission to UMAP when I open 
OSM, but in the window there are no options to select a permission..?
In Dutch:






Thanks,

Cees
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