Hello SlayerINF,
I was having this issue today when going through the dropdown menu on the main page and I wound up selecting 4.26.0 in hopes of a downstream dialogue clarifying things.
Sure enough as you continue the process it automatically chooses the latest minor version of the major version of the engine you chose.
Try just installing 4.26.0 and see if it updates for you as well. Hope this helps.
-Jason