Plesk MagicSpam license activation

[lbenzo]

Hello,

I've buyed MagicSpam through Parallel's. Everytime I try to activate the license, I receive the same problem:
Invalid license key specified.Debug Information - If you believe that this error needs to be reported to the MagicSpam development team, you can forward the information below to them at debug@magicspam.com.

Error communicating with Plesk API: El acceso del administrador desde la dirección '127.0.0.1' está restringido siguiendo las políticas de restricción de Ips en uso
Attempting recovery route
Unable to find fallback file [/etc/psa/psa.key]
Error loading server unique id.

#0 /usr/share/magicspam/php/includes/sections/class.MagicSpamLicenseKeySection.php(34): MagicSpamLicense->update('A00K00-MP3T01-F...')
#1 /usr/share/magicspam/php/includes/class.MagicSpamPage.php(55): MagicSpamLicenseKeySection->prepare()
#2 /usr/share/magicspam/php/includes/class.msinterface.php(65): MagicSpamPage->prepare()
#3 /usr/share/magicspam/php/includes/class.msinterface.php(58): MSInterface->prepare(Object(MagicSpamPage_settings))
#4 /usr/share/magicspam/php/htdocs/index.php(51): MSInterface->run('settings')
#5 main

[magicspam]

From the main 'Settings' page of the Plesk interface, click "Restrict Administrative Access" and ensure that 127.0.0.1 is not blocked. You may have simply accepted the Plesk defaults for restricting admin access, which does not include an exemption for localhost (127.0.0.1).