Issue How to manually install or upgrade an extension for very slow or no international bandwidth

[WSNHosting]

Server operating system version

alma 8

Plesk version and microupdate number

18.x

Hello

my server install in idc mode Domestic only not international bandwidth

but i need install plesk or extension very slow use time install 3 day not success !

How to manually install or upgrade an extension for very slow or no international bandwidth

thankyou