Thank you for reporting this, we are upgrading our entire license service to use your cTrader ID, this bug was reported Friday and an update to the site was published today. We have also published all the Neptune cBots again to fix a bug reported for the trial versions.
Please check the log for the latest version number which should be 2.6.2
Please download all the Neptune cBots again, remove the existing licenses from your manage licenses and start each cBot to register, you should now see your cTID on the registration page.
Benefits of the new license system
We are now using a new cTrader integrated license system that will allow you to install your products on as many machines as you want instead of just 2, this allows you to use laptops, PCs or VPS at the same time and you only have to register once.