There are limits in place on all users accounts which prevent you from depositing over a certain amount by card per 24 hours/month. These limits are rolling, so will not reset until 24 hours/one month after your first successful card deposit of that 24 hour/monthly period.
We wish these limits were not necessary, but unfortunately they are. Having these daily card deposit limits in place reduces our exposure to fraud, and ultimately protects both ourselves and our users.
Your limit may be eligible for an increase, feel free to contact our Support team at email@example.com to request a limits review.