@nancymatl 

I am not sure whether the downgrade option is applicable to QBO ZA version. As a workaround, consider this option:

1. Explore and utilize the trial period of this tool to copy your data between QBO accounts

https://www.chronobooks.com#_r_chrono

2. Once you are ready to proceed, open a new account

https://quickbooks.grsm.io/South-Africa

Good luck!