I can't activate my GP-Premium its showing me an error am just buying

I just buy before 1 day ago Gp-Premium but when am going to install its show me an error and redirect to it options.php page

I do't know how to solve it i try a lot of time but can't do anything details are given below which I recieve on my admin email.

I also contact to my hosting they told me to contact your theme developer team its not our ends issue.

Detail
Your Site is Experiencing a Technical Issue
Howdy!

Since WordPress 5.2 there is a built-in feature that detects when a plugin or theme causes a fatal error on your site, and notifies you with this automated email.

In this case, WordPress caught an error with one of your plugins, GP Premium.

First, visit your website (https://beonmusic.com/) and check for any visible issues. Next, visit the page where the error was caught (https://beonmusic.com/wp-admin/options.php) and check for any visible issues.

Please contact your host for assistance with investigating this issue further.

If your site appears broken and you can't access your dashboard normally, WordPress now has a special "recovery mode". This lets you safely login to your dashboard and investigate further.
To keep your site safe, this link will expire in 1 day. Don't worry about that, though: a new link will be emailed to you if the error occurs again after it expires.

When seeking help with this issue, you may be asked for some of the following information:
WordPress version 5.8.1
Current theme: GeneratePress (version 3.0.4)
Current plugin: GP Premium (version 2.0.3)
PHP version 7.4.23

Error Details
=============
An error of type E_ERROR was caused in line 499 of the file /home/n9c4c75/beonmusic.com/wp-content/plugins/gp-premium/inc/activation.php. Error message: Uncaught Error: Call to a member function get_error_message() on array in /home/n9c4c75/beonmusic.com/wp-content/plugins/gp-premium/inc/activation.php:499
Stack trace:
#0 /home/n9c4c75/beonmusic.com/wp-includes/class-wp-hook.php(303): generatepress_premium_process_license_key('')
#1 /home/n9c4c75/beonmusic.com/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters(NULL, Array)
#2 /home/n9c4c75/beonmusic.com/wp-includes/plugin.php(470): WP_Hook->do_action(Array)
#3 /home/n9c4c75/beonmusic.com/wp-admin/admin.php(175): do_action('admin_init')
#4 /home/n9c4c75/beonmusic.com/wp-admin/options.php(19): require_once('/home/n9c4c75/b...')
#5 {main}
thrown
Please Solve this issue as soon as possible
Thanks