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Hi @vnguyen1977,
Welcome to TPG Community!
I checked the notes on the account and can see that the plan has been upgraded to unlimited data with the same NBN12 speed tier with 10.0 Mbps typical evening speed.
If the speed tier you currently have is insufficient for your needs then upgrading your plan would certainly make a difference. We can upgrade your plan to NBN50.
For more information please check our website :https://www.tpg.com.au/nbn
Thanks,