Shop management tab not showing up on TikTok App

Hi, I’m running a shopify store based in Singapore and have downloaded the tiktok app on shopify.

I have created the necessary accounts for syncing (both tiktok seller account and tiktok business account in Singapore) and am able to link both accounts.

However, I am not seeing the shop management tab in the tiktok app (see pic) that would allow me to add products to my TikTok shop. My products were actually approved in the sync status but now that approved status disappeared as well. Is anyone able to provide some advice (instead of downloading 3rd party paid apps) on how to resolve this? Appreciate any form of help, thanks!