just reduce speed in options - limits - max connections / seconds. Try using 1,
then if same problem, try 0.1. It will be slower, but it will work. Also try
reducing flow control - number of connections to 1. Also in between any of
those retries, in case you are still banned/restricted, you need some vpn or
proxy to change your ip, for example windscribe vpn app. Before trying any new
location or ip, first open web page in web browser to pass any test/captcha if
needed, only then use httrack to download.