Is there any way to change the download folder?
I've tried change most settings but it seem not working.

Heads up, doesn't work in firefox for android.
When mobile support or is it not even planned (firefox for android | fennec/aurora)?

Fantastico rivedere il miglior download manager in formato estensione per firefox di nuovo in campo, meriterebbe 6 stelle ma ne devo dare 4.
A causa di FIREFOX ed il nuovo sistema che non permette di uscire da quella che e la "Sandbox" e permettere di scegliere dove poter scaricare i file, si e costretti a buttare tutto in Download di Default di Windows.
In attesa di qualche soluzione futuribile per dare la stellina mancante.

Manca, mi sembra, la possibilità di avere il timestamp del server nei file scaricati.

Gran bel lavoro!

Missing, it seems to me, is the possibility of having the server timestamp in the downloaded files.

Good job!

Соглашусь с "whocares" что версия "3.0.8" лучшая на данный момент, всё что после, это уже не тот привычный и быстрый менеджер загрузок...
Вина конечно не разработчика, а новых версий браузера "Quantum" разработчики которого пустили под нож сотни отличных приложений. И чего дабились, как был "Quantum" не поворотливым недоразумением, так и остаётся.
Тоже использую версию 3.0.8 в браузере "FF 56.0.2"
Скриншот ➜ https://i6.imageban.ru/out/2019/09/15/4432917dc0f98266017b83f6ec82315f.jpg
Скриншот ➜ https://i1.imageban.ru/out/2019/09/15/02dffa4f6a61621126f95ccdb4ed0458.jpg
Скриншот ➜ https://i4.imageban.ru/out/2019/09/15/d5d25c48bcedb84095c74b9cc1668a36.jpg
===================
14:34
15.09.2019
Nils Maier
Thanks for council, in an occasion of "SeaMonkey".
Waterfox is set already on one of computers.
Screenshot ➜ https://i6.imageban.ru/out/2019/09/15/7a5bbb5b784aaf6e82c56dca42151be5.jpg

Edit: New version 30 september 2019 (4.1.2) : now is good, is improved with new features asked and bug fixes, like the sound and the easy delete shortcut to delete completed downloads, furthermore i see a whole new speed improvements. Thank you.
Now i think you have forgotten a feature: the "Empty the download files list (of downloaded files, green color) when the main window is closed" . ------------------
Old comment:
This is not good as 3.0.8 dta! version in seamonkey, this has limitations, the download window is worse ( WebExtensions limitations i guess ). This has fewer options and features. Try the 3.0.8 version of dta! in seamonkey browser (2.49.5 last version of seamonkey) , it 's the old and best dta! there .
In this new version (4.0.11 ) the download window uses the download system of firefox quantum , try to download many .jpg little/medium files together , 4 files per time, it is too slow and it takes too many resources until almost a browser crash! and has many slowdown even with a fast 4 core cpus and 16gb ram .... THe same situations when you try to cancel or remove all the downloaded files in the log window, i didn't saw an option to remove them automatically and it takes too many resources. there isn't a sound when the download completes either too .. I loved dta! for years but this is new version has many problems, if will not be resolved i 'll continue to use the old version in seamonkey. sorry

Ist ist wieder da, fast genau so gut wie früher. Nur eine Sache stört mich etwas: Ich hab nicht gefunden, wie ich ihm sage wo er speichern soll. Alles nur nach Download machts unübersichtlich.

Wäre schön, wenn Waterfox (identisch mit Firefox) erkannt und dann nicht abgewiesen würde.
Das ist das Schmankerl, was eine 1 (fünf Sterne) ausmacht: mehr als der Teller.