You may need to explain that you're on a BVA to an 820 and show them this: https://www.border.gov.au/visas/supporting/Pages/820/bridging-visa.aspx
Your visa grant notification explains the conditions of your visa as well. At the very bottom of the pdf, it says "Permission to study: When your bridging visa (class WA) is in effect, you will have full permission to study."
I would show them the website, that you have applied for the 820/801, and the entire BVA grant notice (not just the grant part). Probably wouldn't hurt to take a printout of your BVA status in VEVO as well to prove the BVA is in effect. I like to come prepared when dealing with people that don't understand the process.
Your visa grant notification explains the conditions of your visa as well. At the very bottom of the pdf, it says "Permission to study: When your bridging visa (class WA) is in effect, you will have full permission to study."
I would show them the website, that you have applied for the 820/801, and the entire BVA grant notice (not just the grant part). Probably wouldn't hurt to take a printout of your BVA status in VEVO as well to prove the BVA is in effect. I like to come prepared when dealing with people that don't understand the process.