Deprecated Function mcrypt is throwing errors

New install of GeoCraft V2.0.9 is using a deprecated function and the result is the following errors related to specific areas within theme.

Error occurs with php7.2.x versions and all versions prior to 7.2 are deprecated and not suggested for use.

Right now I have active site and new test site, both of which throw same error.
The only resolution seems to be to replace mcrypt function calls with something suitable for php7.2.x

Abdul Rahman made good suggestion here for replacement
https://stackoverflow.com/questions...ted-what-is-the-alternative/58486478#58486478

but unfortunately I cannot do that.....so

Could you please provide suggestion for workaround or update GeoCraft Version 2.0.9 to handle new function?

======copy of my errors thrown while using wp in debug mode======

Member Dashboard Access
Fatal error: Uncaught Error: Call to undefined function mcrypt_get_iv_size() in /home/**removed**/public_html/ol/wp-content/themes/geocrafttheme-v2/library/class-encryption.php:30 Stack trace: #0 /home/**removed**/public_html/ol/wp-content/themes/geocrafttheme-v2/library/dashboard/templates/listings.php(28): GC_Encryption->encode('a:4:{s:6:"actio...') #1 /home/**removed**/public_html/ol/wp-content/themes/geocrafttheme-v2/library/dashboard/class-dashboard.php(298): include('/home/**removed**...') #2 /home/**removed**/public_html/ol/wp-content/themes/geocrafttheme-v2/library/dashboard/class-dashboard.php(130): GC_dashboard->user_listing(41) #3 /home/**removed**/public_html/ol/wp-includes/class-wp-hook.php(288): GC_dashboard->view('') #4 /home/**removed**/public_html/ol/wp-includes/class-wp-hook.php(312): WP_Hook->apply_filters('', Array) #5 /home/**removed**/public_html/ol/wp-includes/plugin.php(478): WP_Hook->do_action(Array) #6 /home/**removed**/public_html/ol/wp-content/themes/geocrafttheme-v2/template_dashboard.php(19): d in /home/**removed**/public_html/ol/wp-content/themes/geocrafttheme-v2/library/class-encryption.php on line 30

Member Add Listing Access
Warning: sizeof(): Parameter must be an array or an object that implements Countable in /home/**removed**/public_html/ol/wp-content/themes/geocrafttheme-v2/library/geocraft-functions.php on line 43
======copy of my errors thrown while using wp in debug mode end===

and as per evanedgar in previous post on forum
https://www.inkthemes.com/community...an-object-that-implements-countable-in.23637/
Getting the following error:
Warning: sizeof(): Parameter must be an array or an object that implements Countable in /......./wp-content/themes/geocrafttheme-v2/library/geocraft-functions.php on line 43

 

Done...Thanks