All tips sent and received on the site are screened through our security system to help prevent various issues. While it's rare that a tip gets rejected, you may see the following error when trying to send a tip:

You cannot tip this user right now. Please contact support for more information.

When this happens, it means that either you're not able to send tips at the moment, or that the receiver is unable to receive tips at the moment.

You'll need to contact our support team so they can take a look into this.