Can't believe i missed this; their rates and everything (xcept maybe for that bonus) was not really overpriced so i didn't even bother looking further into it.
1H8Pm29JPzX3KjjapjmgpYSCUySVnHKfWT
likely controls 47 addresses as per
https://bitiodine.net/cluster/1H8Pm29JPzX3KjjapjmgpYSCUySVnHKfWT1DfJHnwEpS3wsEobp5VcuVVmaDxmiFFQ8C
1NiwPJyar97hVpyFYZjjPf6ce7gyvXNRZ8
1H8Pm29JPzX3KjjapjmgpYSCUySVnHKfWT
18SvViXzBoKURr9FPecVjYGvFjZZeZiPAg
1GrmYxRrkqSrQYyUXb47RL7o2bkvW9kHmT
1BJGYUVdSvu7Lm9j2jKCAnKYHoXixZ3zgJ
and even got 53 addresses.
Checked all addresses walletexplorer.com gave me, couldn't find any more accounts than you did.