DB errors / 520 error from Cloudflare

I recently installed Rankmath and I’m now getting constant 520 errors. I’m also struggling to save pages in Elementor.

Below is an example of an error which I guess could be related. Can anyone help me to resolve this please?

[Sun Nov 15 22:05:50.939415 2020] [proxy_fcgi:error] [pid 18622] [client 0.0.10.0:40578] AH01071: Got error 'PHP message: WordPress database error Table 'nfyzwyftee.wp_rank_math_analytics_objects' doesn't exist for query DELETE FROM wp_rank_math_analytics_objects WHERE object_type = 'post' AND object_id = 63222 made by do_action('wp_ajax_elementor_ajax'), WP_Hook->do_action, WP_Hook->apply_filters, Elementor\\Core\\Common\\Modules\\Ajax\\Module->handle_ajax_request, call_user_func, Elementor\\Core\\Documents_Manager->ajax_save, Elementor\\Core\\Base\\Document->save, Elementor\\Core\\Base\\Document->save_settings, Elementor\\Core\\Settings\\Page\\Manager->ajax_before_save_settings, Elementor\\Core\\Settings\\Page\\Manager->save_post_status, wp_update_post, wp_insert_post, do_action('save_post'), WP_Hook->do_action, WP_Hook->apply_filters, RankMath\\Analytics\\Watcher->update_post_info, MyThemeShop\\Database\\Query_Builder->delete, MyThemeShop\\Database\\Query_Builder->queryPHP message: WordPress database error Table 'nfyzwyftee.wp_rank_math_analytics_objects' doesn't exist for query DELETE FROM wp_rank_math_analytics_objects WHERE object_type = 'post' AND object_id = 63222 made by do_action('wp_ajax_elementor_ajax'), WP_Hook->do_action, WP_Hook->apply_filters, Elementor\\Core\\Common\\Modules\\Ajax\\Module->handle_ajax_request, call_user_func, Elementor\\Core\\Documents_Manager->ajax_save, Elementor\\Core\\Base\\Document->save, Elementor\\Core\\Base\\Document->save_settings, Elementor\\Core\\Settings\\Page\\Manager->ajax_before_save_settings, wp_update_post, wp_insert_post, do_action('save_post'), WP_Hook->do_action, WP_Hook->apply_filters, RankMath\\Analytics\\Watcher->update_post_info, MyThemeShop\\Database\\Query_Builder->delete, MyThemeShop\\Database\\Query_Builder->queryPHP message: WordPress database error Table 'nfyzwyftee.wp_rank_math_analytics_objects' doesn't exist for query DELETE FROM wp_rank_math_analytics_objects WHERE object_type = 'post' AND object_id = 63305 made by do_action('wp_ajax_elementor_ajax'), WP_Hook->do_action, WP_Hook->apply_filters, Elementor\\Core\\Common\\Modules\\Ajax\\Module->handle_ajax_request, call_user_func, Elementor\\Core\\Documents_Manager->ajax_save, Elementor\\Core\\Base\\Document->save, Elementor\\Core\\Base\\Document->save_elements, Elementor\\DB->save_plain_text, wp_update_post, wp_insert_post, do_action('post_updated'), WP_Hook->do_action, WP_Hook->apply_filters, wp_save_post_revision, _wp_put_post_revision, wp_insert_post, do_action('save_post'), WP_Hook->do_action, WP_Hook->apply_filters, RankMath\\Analytics\\Watcher->update_post_info, MyThemeShop\\Database\\Query_Builder->delete, MyThemeShop\\Database\\Query_Builder->queryPHP message: WordPress database error Table 'nfyzwyftee.wp_rank_math_analytics_objects' doesn't exist for query DELETE FROM wp_rank_math_analytics_objects WHERE object_type = 'post' AND object_id = 63222 made by do_action('wp_ajax_elementor_ajax'), WP_Hook->do_action, WP_Hook->apply_filters, Elementor\\Core\\Common\\Modules\\Ajax\\Module->handle_ajax_request, call_user_func, Elementor\\Core\\Documents_Manager->ajax_save, Elementor\\Core\\Base\\Document->save, Elementor\\Core\\Base\\Document->save_elements, Elementor\\DB->save_plain_text, wp_update_post, wp_insert_post, do_action('save_post'), WP_Hook->do_action, WP_Hook->apply_filters, RankMath\\Analytics\\Watcher->update_post_info, MyThemeShop\\Database\\Query_Builder->delete, MyThemeShop\\Database\\Query_Builder->query', referer: https://mysite.net/wp-admin/post.php?post=63222&action=elementor

The page I need help with: [log in to see the link]