I don't have any experience of file transferring the way you used.
According to files transfer instruction, server ID must be updated after transferring files are completed.
It seems you have only copied files to Time4vps and and haven't deleted the files from main server.
So you have all files in both main server and Time4vps (doubled).
Before deleting the files in main server, you need to make sure all files are working well in Time4vps or not.
After moving files from main server to Time4vps, you also need to update your database.
Please check your server IDs named "id" under the database table "file_server" in Site Configuration >> System Tools >> Database Browser.
Let's say your main server (Loacal Default) ID is "1" and Time4vps server ID is "2".
Then you need to update all "serverId" roles from "1" to "2" (Loacl Default server ID to Time4vps server ID).
You may update "serverId" manually one by one in "file", "file_action" tables etc...
If you have hundred or thousand of files, it is not easy to update manually and it will take more times to do that.
So I would recommend to use phpMyadmin and update all "serverId" using the following command.
UPDATE file SET serverId = NEW_SERVER_ID WHERE serverId = OLD_SERVER_ID;
For example - UPDATE file SET serverId = 2 WHERE serverId = 1;
(1 is your main server ID and 2 is Time4vps server ID)
Then check all files are working correctly or not. (such as downloading file)
If everyting is working well, you can delete all files from your main server and you will get more free spaces for main server.
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For uploading problem, try to set main server (Local Default) to "disabled". In that way, further file uploading will not be in your main server anymore.
If it is not working, try to check all Cron tasks are correct or not.
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For file server recommendation,
Online.Net (Unmetered Bandwidth at 500Mbps to 1Gbps port speed) but only big server available at the moment. (starting from 79.99 Euro)
https://www.online.net/en/dedicated-server
OVH , most of the people says OVH is good but I have never used it.
Now I am using server from https://www.leaseweb.com/ but do not buy directly from them because of default bandwidth limit is only 10 TB to 20 TB. It may not enough bandwidth for file server. Also a bit expensive and less diskspaces.
Try to find Leaseweb.com reseller and you will get 100 TB bandwidth and more diskspaces with resonable prices.
Here are some of Leaseweb.com resellers;
https://www.eqservers.com/
http://redswitches.com/
You will get 12TB HDD and 100TB bandwidth with around $70/mo.
I hope the above information will help you a little.
You can also contact to admin via contact form and you may get help from him.
