Employee unable to select superfund in Self-Onboarding

Hi

We have a new employee who is trying to complete self-onboarding, when they get to the superannuation section there is no option for them to select their nominated fund, it is defaulting to "My Mercer" super and asking him to select investment portfolio.

Note, My Mercer isn't our preferred super fund either...so its not like its defaulting to this for this reason. 

We do have two other employees that had nominated My Mercer, but we have also had to other employees onboard since then and didn't have this issue....they did nominate our preferred super fund though so not sure if this is the reason why the didn't have the same problem perhaps?

Any ideas on how he can get passed this an nominate his preferred fund.

Thanks in advance😊