Non-existing support, zero reaction from the dev. in the posts on Github, zero consideration for the issues brought to his attention.

The addon has been updated many times and still the dev couldn't find time to make a freaking simple improvement like introducing a time limit for the button which appears when you select text.
A button that right now stays there FOREVER until you click somewhere else in the page, which is NOT always the case (for example, if you copy something to attach it in another page. Simple case: I copied the title of a movie I was streaming, so to write it to someone in an email. When I went back to the streaming, the freaking button was there in the mid of the freaking video. This is RIDICULOUS and one of the most blatant examples of atrocious UX Design.

It's so annoying that it escapes my comprehension how people give this thing 5 stars.

Trying to translate an entire website, the add-on always uses the Google translator, even with an existing DeepL API key. I am surprised why this add-on is recommended when even such basic things do not work.

The addon adds content to the editor itself, e.g. Wordpress
The following content is added:
"div id="simple-translate" class="simple-translate-light-theme"
div
div class="simpie-translate-button isShow" style="background-image: url('moz-extension ://7bd028b3-62a8-43e5-918c-13744618dc89/icons/512.png'); height: 22px; width: 22px; top: 3648px; left: 38px;"/div
div class="simple-translate-panel " style="width: 300px; height: 200px; top: 0px; left: 0px; font-size: 13px;"
div class="simple-translate-result-wrapper" style="overflow: hidden;"
div class="simple-translate-move" draggable="true"X/div
div class="simple-translate-result-contents">
p class="simple-translate-result" dir="auto"X/p
p class="simple-translate-candidate" dir="auto"X/p
/div
/div
/div
/div
/div"

The Simple Translate translator does not work on any site. ☹️

Does not work using Deepl API despite claim. No support anywhere.

There is no way to choose whether the translation is excecuted with Deepl or Google. I am having the impression that the translation is done by Google and is thus of bad quality.

direct online deepl translation doesnt need any authentication but this extension does...

As long as you don't need to interact with the webpage, you'll be good. Who needs to click on anything when online anyway.

Garbage extension doesn't even work on Twitch.

Error: Service usage limit reached. Please wait a while and try again.

When text is selected and the translation button pops up is activated, noting happens. To Deepl API works perfectly.

Win10 pro 64bit
何度やっても、リフレッシュしても「アドオンが破損しているためインストールが中止されました」になり、インストールできません。