A testimonial should not disappear because you moved a widget, and a free plan that shows two of them is not a free plan.
Testimonials Wall keeps every testimonial in your own site’s collections. Add as many as you like, for free, and show them in a grid or one quote at a time, in your site’s fonts, with your accent colour. Remove the element from a page, add it to another, redesign the page: nothing is lost.
On Pro, a button under the wall opens a short form on your site. Every submission waits in your dashboard until you publish it, so nothing appears on the page that you have not read. An email address, if you ask for one, is kept for you and is never shown to visitors. Pro also adds star ratings, photos, the slider and the masonry layouts, and schema.org Review markup for search engines.
Choose the order yourself, or newest first, and feature the ones that matter. Business adds several walls, so each page can show its own, tags to filter what a page shows, and CSV import for the testimonials you already have.
There are no imports from other review sites. Paste those testimonials in, or import a CSV, and they stay yours.