Installation on 1&1 - php version

Hello,
I have just started an installation on my webspace provided by 1&1 / ionos.
Within the hosting environment the php version is 7.3 but when I access through SSH the php version is 4.4.9. When I try to install the admin plugin through gpm I get the error
Parse error: syntax error, unexpected T_STRING, expecting T_CONSTANT_ENCAPSED_STRING or ‘(’ in /homepages/25/d313203090/htdocs/domain/bin/gpm on line 4

Is this a php issue I need to take up with 1&1 or is it something to be done within Grav?

Thanks

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