Startover webshop to 6

I have 2 VPS hosts, I created a new install on a new VPS. Moved the DNS to new VPS, but I cannot register the shop, becauses it is already there in v5.

Do I need to delete the shop in the account area? or re-register? Registering trhough admin area in the shop doesnt work (stays loading shops)

The same domain can‘t be registered twice. So you need to migrate the existing shopware 5 domain to a shopware 6 domain in your account 

thanks!