For some reason your DNS server is unable to lookup the satellite address.
Could you please try to use 8.8.8.8 or 1.1.1.1 as your DNS address instead of your current one?
Your network is pretty unstable. Could you switch to wired connection?
Perhaps it would be better to use rclonewith gateway MT configuration. It would not open many connections like uplink and may be your network would allow to upload normally without interruptions.
Perhaps it has issues, can you check from other VPS server of this provider?
Sometimes re-creating the server is enough to solve an underlaying issues, but it depends on provider of course.
Please also check their conditions - perhaps they have some rate limits or limit how many connections you can open (uplink opens 110 connections for upload for each segment (segment is less or equal 64MB)).