You’re richt, sma problem here. Even there own updater doesn’ work.
A would be download manager :D
Dear Customer, if you already bought our Allavsoft. You may updated to the latest version 18.104.22.16822 from our official websites http://www.allavsoft.com/download.html
We just test your mentioned issue and find it does exist, then our tech staff just have successfully solve this issue.
Thank you so much for your suggestion.