

If you trust the initial install then unless there is a warning about the signing key you are good. Only signal devs can sign the builds so if you installed the play store version then updated with their standalone apk or fdroid version then it should just work as the signing key is the same.
Guardian project are just publishing signals apk files as the signature matches.
They will probably just show message to Swedish ip addresses and state that they cannt provide you with the binary as you are using a Swedish ip.
Something very clear to say use a VPN 😉