As mentioned previously, Clearance has several different instances running in different Datacenters around the world. The instances are totally independent and do not share any data.
Consequently, if you have a Clearance account in a European datacenter, this account will not work in another datacenter.
When you purchase Clearance, you will be asked to select the datacenter region you prefer and based on that selection you will receive an invitation email with the appropriate link.
Updated 5 months ago