If you're interested in using IDM, I recommend considering the following:

Tonec Inc. has confirmed that over 90% of cracks found on sites like free4pcorg contain malicious code. In 2023, a fake IDM crack distributed — a trojan that steals saved passwords, cookies, and cryptocurrency wallets.

If the password "123" is failing, there are a few reasons why this might happen:

Modern browsers like Chrome and Edge have built-in parallel downloading. Extensions like offer IDM-like features for free.