Mapy.cz Photo doesn't work anymore

[Discostu36]

The map layer Mapy.cz Photo is blank for a few weeks now. Browser console reads HTTP/2 403 Forbidden for the map tiles.

[simon04]

@frettie, do you happen to know what happened to mapy.cz and/or the aerial imagery can still be used?

[mkgrgis]

There is OpenTopoMap and Esri imagery as alternatives, see with other here.
Mapy.cz need now a sdk key. I saw on the main map https://mapserver.mapy.cz/base-m/z-x-y?sdk=base64key format of query.