I can log in OK once, but then when I click on any options it asks me to log in again, but it then refuses to accept my (correct) email and password.
I have removed all cookies, removed all browser cache and restarted the browser (Firefox) but the problem persists.
I have also tested in Chrome and the problem is still there.
I have reset my password and the problem also continues.
The result is I can log in once to gain access to the site, but as soon as I want to do anything it logs me out and I cannot get back in again.
Wow, I am so sorry for the trouble you had trying to work in your account, but thank you very much for contacting support as well. It seems our server patching was the cause here and it's been resolved, and I see that you have been able to log in and send a campaign. Phew!