Key not working and unable to submit a support ticket

[TwixieTrap 3]

Hi, so I bought a Lifetime key back in 16. and I just tried activating it again, but the bot says my key does not exist.
so I tried to submit a support, and apperently Im not allowed to do that.. 
Anyone had that issue before?

[Kintaro 27]

i am sorry for the problems. please join Slack and contact me there! you cannot miss me! ^^

i will help you out, no worries!