Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi Bayu, thank you for coming to the forum.
I'm sorry to hear about the trouble you're facing, I will be happy to assist in the best way I can.
Please try to activate and install at https://account.microsoft.com/services/ or Office.com/setup or https://office.com
Let us know if still didn’t work.
Kind Regards Myk