It is normal practice as newbies send many spam PMs or scam incentivized PMs.

You can quote one post of Rollbit Razer, reply that post and Rollbit Razer will be notified about your reply when he logs in his account. The official support channel is their website, not this forum. They have only one representative on this forum but on their website, they have many staffs actively work including customer support staffs who will support you quickly.