Cannot upgrade Free Tier to PAYG A1.Flex out of capacity in sa-saopaulo-1 for 3 days

Hello,

I'm facing two critical issues with my Free Tier account:

Issue 1 - Cannot upgrade to Pay As You Go:
Every time I try to upgrade via Billing > Upgrade and Manage Payment,
I get "Something went wrong" error. I've tried multiple browsers,
different credit cards, and multiple days. I am the Administrator.

Issue 2 - VM.Standard.A1.Flex out of capacity:
I've been running an automated retry script for 3+ days (1000+ attempts)
trying to create an A1.Flex instance in sa-saopaulo-1.
Always "Out of host capacity". Tried both 2 OCPUs/14GB and 1 OCPU/6GB.

The support chat says I need PAYG for live support,