customising problem

hi, I have catch Responsive Pro installed last year on april 28, 2018. It used to work all good. I had subscription for one year but my subscription has expired on April 28, 2019. Question: Can I still customise menu bar and access other options which supposed to be available for me so far? I am not talking about new updates but just accessing the customisations and other options which I had paid for last year. Currently, when I click the customise button, I see this error page: Fatal error: Allowed memory size of 41943040 bytes exhausted (tried to allocate 262144 bytes) in /home/futureoutlooks/public_html/wp-content/themes/catch-responsive-pro/inc/customizer-includes/catchresponsive-customizer-color-options.php on line 387 Can you please help me what to do?