Which server are you trying to connect through? I noticed that sometimes when I use the US California server I end up in Czech Reputblic.If my Google mail is connected I get a warning that someone is hacking my account. So it is possible that is happening to you. Check the IP address assigned to you from the server. The Czech IP address was 37.x.y.z.
Same thing here, but connected to US East and using Wireguard connection, Amazon refuses to connect. Changed the connection to the regular OPENVPN and it worked fine. Using the PIA Client and with Windows 10.
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Changed the connection to the regular OPENVPN and it worked fine.
Using the PIA Client and with Windows 10.