Thank you for taking the time to comment here, although I think you may have CartFlows confused with perhaps another plugin you use.
1. You said “I contacted the developers but they never replied”. We searched our ticket desk as well as the support forum here and have never been contacted by you. You don’t become the most used and most recommended sales funnel builder for WordPress without providing top tier support. We respond to all tickets in under 24 hours unless it is the weekend. This goes for free users and Pro customers.
2. You said “I checked the database and this pluging had left hundreds of pieces of information behind like tables and strings of code”. This is simply not accurate of CartFlows and anyone can install and verify this. First, CartFlows doesn’t add any tables to your WordPress database. Second, CartFlows, like all WordPress plugins, makes a few entries in the wp-options table (every plugin does this). It has no effect on your website or database, and as I said, every WordPress plugin does this. That’s what the wp-options table is there for, this is how WordPress works.
3. You said “Woocommerce native checkout page stopped loading in Elementor”. The free version of Elementor does not let you design WooCommerce controlled pages like product page, shop page, cart page, checkout page, etc. These are features that you can have if you purchase Elementor Pro. But all of that has no relation to CartFlows.
The core version of CartFlows allows you to create a new global checkout page using any page builder you choose. This is a side feature where the main feature is building sales funnels. To date, we have over 100k users that choose CartFlows to power their ecommerce website. We are hyper-focused on performance, simplicity, and enabling our users to maximize the sales of their ecommercce stores.
If you want one of our engineers to look at your database to see what’s going on there, feel free to contact us via our ticket desk. However, it is a technical impossibility for CartFlows to have created any tables in your database.