I've been on here for several years. I made a second account after no longer having access to the previous account.
Have you tried regaining access to your old account? If not: follow the instructions in
Recovering hacked/lost accountsWhen I try to send a message I get the following: "The last posting from your IP was less than 360 seconds ago. Please try again later. The thing you were trying to post was saved as a draft. This limit decreases substantially as your account becomes more established." It's becoming frustrating, and it's really unnecessary to discuss a private conversation under a public topic.
What's really going to get you is that you can only send 2 PMs per day, with at least an hour in between. Those 360 seconds are not even the main restriction.
Getting whitelisted will solve that, but those anti-spam restrictions were put in place for a reason, so I need a bit more to convince me you're not a spammer before I can whitelist you.