IPT is a fine tracker but because of their scummy behaviour [1] you are very unlikely to climb the tracker ladder from there. You can try following that_guy_iain's advice under for sure, but if you feel stuck go for RED 100% (regardless of your feelings about collecting music).

Remember that user invites carry the risk that if someone in your invite tree breaks a golden rule (trading/selling invites) you will be banned too. Always prefer official recruitement.

[1] https://postimg.cc/hJMd5TJF