Error Code 0x2efd

I'm trying to activate a newly purchased license key and i get the error below. I'm running the as of the time of writing, latest version. I can connect to update the program no issues. But this error still persists. I can't find "customer support team" anywhere on Ccleaner website to get assistance as is mentioned in the pic. I've knocked all anti-virus and firewall off, note that the updater server easily connects with or without these on/off.

1137852669_Image1.jpg.e5d175fe84fa21f61acedf48929974e7.jpg

Email is...

support@ccleaner.com

or online at ...

https://support.piriform.com/hc/en-us/requests/new?ticket_form_id=86507

There may be a bottle neck as people update to today's update. But as @hazelnut said support can be reached via those two methods