PHP Deprecated: Creation of dynamic property A2_Optimized router is deprecated

Hi, I recently noticed a change in the Paid Memberships Pro pages with a message: There has been a critical error on this website. I deactivated all the plugins on the site except PMP and it seems to be the problem. I tried to uninstall the plugin and reinstall but it didn’t work. I activated all the plugins and ran WP Debug:

[02-Aug-2024 14:35:03 UTC] PHP Deprecated: Creation of dynamic property A2_Optimized::$router is deprecated in /home/ipdyoga/public_html/wp-content/plugins/a2-optimized-wp/includes/class-a2-optimized.php on line 147
[02-Aug-2024 14:35:03 UTC] PHP Deprecated: Creation of dynamic property A2_Optimized::$controllers is deprecated in /home/ipdyoga/public_html/wp-content/plugins/a2-optimized-wp/includes/class-a2-optimized.php on line 92
[02-Aug-2024 14:35:03 UTC] PHP Deprecated: Creation of dynamic property A2_Optimized::$models is deprecated in /home/ipdyoga/public_html/wp-content/plugins/a2-optimized-wp/includes/class-a2-optimized.php on line 93
[02-Aug-2024 14:35:04 UTC] PHP Deprecated: Creation of dynamic property A2_Optimized\Core\Router::$route_type_to_register is deprecated in /home/ipdyoga/public_html/wp-content/plugins/a2-optimized-wp/core/class-router.php on line 154
[02-Aug-2024 14:35:04 UTC] PHP Deprecated: Creation of dynamic property A2_Optimized\Core\Router::$current_controller is deprecated in /home/ipdyoga/public_html/wp-content/plugins/a2-optimized-wp/core/class-router.php on line 220
[02-Aug-2024 14:35:04 UTC] PHP Deprecated: Creation of dynamic property A2_Optimized_Benchmark::$tmp_folder_name is deprecated in /home/ipdyoga/public_html/wp-content/plugins/a2-optimized-wp/core/A2_Optimized_Benchmark.php on line 11
[02-Aug-2024 14:35:04 UTC] PHP Warning: Constant WP_MEMORY_LIMIT already defined in /home/ipdyoga/public_html/wp-config.php on line 115

I don’t know any code but seem to able to follow instructions. All help will be appreciated.

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