This article explains the location shown on the FortiSASE web portal.
Scope
FortiSASE.
Solution
The region in the lower left corner that is displayed on the web portal is not fixed; based on where the user is connecting to the portal from and it is not ‘deployed’ in any particular region. However, that is instead the region the web user is connecting to.
Therefore, it depends on where the user is sourcing from, And the portal region is independent of the customer’s pops/regions.