From the SelfWealth website itself! You will notice things changed when interest rates fell.
Dare I say, most will now receive no interest.
Do you have a link to the old article you quoted?

Does SelfWealth pay interest on cash in my cash account?

• 2 months ago updated

SelfWealth offers competitive interest rates.

The current rate of interest paid on balances in the cash account as at Wednesday 3rd July 2019 are as follows

• amounts less than $100,000 - no interest paid
• amounts over $100,000 - 0.25% interest per annum

Interest will be calculated daily on the balance at the end of the day. Interest will be paid into your cash account within 5 business days following the end of the month.

The interest rate is subject to changes in line with the Reserve Bank of Australia (RBA) cash rate and SelfWealth reserves the right to adjust the rate as determined.

https://selfwealth.zendesk.com/hc/en-au/articles/360030950591-Does-SelfWealth-pay-interest-on-cash-in-my-cash-account-