Cryptopia can be used I believe.
Team has well documented wiki pages for setups updates and is also available for assistance under discord support channels: https://discord.colossusxt.io
One other option is to consider using third party easy masternode setup services to ease this part if you like, like using partner options (ie Linda MyStakingWallet)
For reference, some recent ColossusXT Setup Guides below:
Windows / Mac 1.1.1 Wallet Install / Update Guide https://wiki.colossusxt.io/index.php?solution_id=1031
Windows / Mac Wallet Staking Guide: https://wiki.colossusxt.io/index.php?solution_id=1032
Linux / VPS 1.1.1 Wallet Install Guide: https://wiki.colossusxt.io/index.php?solution_id=1025
Linux / VPS 1.1.1 Wallet Update Guide: https://wiki.colossusxt.io/index.php?solution_id=1029
Linux / VPS 1.1.1 Masternode Installation Guide: https://wiki.colossusxt.io/index.php?solution_id=1030
ColossusXT Bootstrap Guide: https://wiki.colossusxt.io/index.php?solution_id=1000
How To Import Android Address into Windows / Mac / Linux Wallet: https://wiki.colossusxt.io/index.php?solution_id=1033