True Nas Scale Creating pool fetching data got stuck

[lk3]

I installed true nas scale in my old laptop which is under the required ram 4gb i created a pool with stripe cos i had only hard disk
but when i click the create button it gets stuck in fetching data tab
what to do now ?
should i have to upgrade ram ? (i will gonna do that anyways in a week)
or tweak any settings inside
or it will just not create with single hard disk ??
please help

 

[lk3]

this is the screeen i got stuck with