cancel link and database problem

Hi again…
After the latest update, or perhaps to a slew of other recent changes??, the cancel event link seems to have stopped working.

I noticed too that I got the following php error:

WordPress database error Table '(database name).wp_eme_bookings' doesn't exist for query SELECT bookings.booking_id FROM wp_eme_bookings as bookings LEFT JOIN wp_eme_payments as payments ON bookings.payment_id=payments.id where payments.random_id='(an id)' made by require('wp-blog-header.php'), require_once('wp-includes/template-loader.php'), include('/themes/whimsical-love/page.php'), get_template_part, locate_template, load_template, require('/themes/whimsical-love/template-parts/content-page.php'), the_content, apply_filters('the_content'), WP_Hook->apply_filters, call_user_func_array, eme_filter_events_page, eme_events_page_content, eme_cancel_confirm_form, eme_get_randompayment_booking_ids

I can see that the problem is that the prefix for my database tables is not (has never been) the usual wp_ (so the query should be: query SELECT bookings.booking_id FROM actualprefix_eme_bookings etc…I can see the random id in my eme_payments table……but it used to work fine…