Login to your 1&1 account

https://www.1and1.com/login?

Click the "Manage Domain" button:

Click "DNS Settings"

IF "Name servers" is NOT set to "1&1 name servers", click the "Use 1&1 Default Settings" button and save the changes:

Point the A record

In the "A/AAA Records" section, add 52.87.130.147 to the "IPv4 Address" field:

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