The instance resize function, i.e. changing an existing instance's flavor[1], is currently not working in the melbourne-qh2 & melbourne-qh2-uom availability zones.

We are currently working on a fix which will be rolled out shortly. Apologies for any inconvenience.

[1] https://support.ehelp.edu.au/support/solutions/articles/6000212271-resizing-nectar-instances

UPDATE: 2021-02-26 13:57

This issue has now been resolved.