Khemikalhardkore 0 Report post Posted February 3, 2018 (edited) Hello, When I enter my serial number into the upgrade / check availability I get the following error message "There's been an error with your submission. Please head to our Community Forum and update us with your issue." Edited February 3, 2018 by Khemikalhardkore clarity Share this post Link to post Share on other sites
Leslie V. 0 Report post Posted February 5, 2018 Hello @Khemikalhardkore, Thank you for reaching out to us through our Community Forums! I checked your account and your purchase was refunded in 2014. This is why an upgrade using that serial number is not possible. If you want to purchase Nitro Pro 11, you can do so here: https://www.gonitro.com/pro/buy I hope that helps! Cheers! Share this post Link to post Share on other sites