Title: Problems while Activating Premium features
Last modified: September 16, 2019

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# Problems while Activating Premium features

 *  Resolved [Lennart Spee](https://wordpress.org/support/users/lennartspee/)
 * (@lennartspee)
 * [6 years, 9 months ago](https://wordpress.org/support/topic/problems-while-activating-premium-features/)
 * Hi Guys,
    I started the seven day trial to see if the features will fit the demands
   of my client. I uploaded the latest premium version and could not activate this
   one. When I try to activate this one I get this Fatal error: Cannot declare class
   ComposerAutoloaderInit13156cd077b85c60f55232387c28ad0c, because the name is already
   in use in /var/www/web154/htdocs/wp-content/plugins/tier-pricing-table-premium/
   vendor/composer/autoload_real.php on line 5
 * When I choose not to use the premium plugin and instead click the button:
 * Yee-haw! Your trial has been successfully started. The paid version of WooCommerce
   Tiered Price Table is already installed. Please activate it to start benefiting
   the Premium features. “Activate Premium features”
    There is only the message “
   this plugin has no valid header” (translated from german)
 * What am I doing wrong?
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fproblems-while-activating-premium-features%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 1 replies (of 1 total)

 *  Moderator [Jan Dembowski](https://wordpress.org/support/users/jdembowski/)
 * (@jdembowski)
 * Forum Moderator and Brute Squad
 * [6 years, 8 months ago](https://wordpress.org/support/topic/problems-while-activating-premium-features/#post-11935379)
 * For pro or commercial product support please contact the author directly on their
   site. This includes any pre-sales topics as well.
 * As the author is aware, commercial products are [not supported in these forums](https://wordpress.org/support/guidelines/#do-not-post-about-commercial-products).
   I am sure they will have no problem supporting you there.

Viewing 1 replies (of 1 total)

The topic ‘Problems while Activating Premium features’ is closed to new replies.

 * ![](https://ps.w.org/tier-pricing-table/assets/icon-256x256.gif?rev=3025448)
 * [Tiered Pricing Table for WooCommerce](https://wordpress.org/plugins/tier-pricing-table/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/tier-pricing-table/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/tier-pricing-table/)
 * [Active Topics](https://wordpress.org/support/plugin/tier-pricing-table/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/tier-pricing-table/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/tier-pricing-table/reviews/)

## Tags

 * [premium](https://wordpress.org/support/topic-tag/premium/)

 * 1 reply
 * 2 participants
 * Last reply from: [Jan Dembowski](https://wordpress.org/support/users/jdembowski/)
 * Last activity: [6 years, 8 months ago](https://wordpress.org/support/topic/problems-while-activating-premium-features/#post-11935379)
 * Status: resolved