How many accounts am I allowed to have at the same time? Am I able to combine accounts?

There is no limit on how many accounts you can run at the same time! You can hold as many challenge and funded accounts as you like simultaneously. The only things to keep in mind are that there is a total funding cap of $300,000 across all your funded accounts combined and hedging between your accounts or using them to mirror trades across each other is strictly prohibited. Combining or merging accounts is not something we offer, but each account runs fully independently so you can manage them all at the same time without any issues.