Perpetrator granted 2.5 years of leave by home office, why??

[Nim123]

I got married to an illegal immigrant who overstayed in the country for 10 years in the UK. He managed to con md and I became pregnant with a child while he was sorting out his papers on the basis that he married a British citizen. In February 2017, after, the court approved his stay in the Uk, things got worse between us and the abuse increased.

In April 2017, I delivered the baby and we separated a month later following an attack.

I notified the home office of the separation and indicated that I have non- molestation court case hearings against him. End of July, I received a letter from the home office advising me that my estranged husband visa has been curtailed and that his biometric card was retrieved.

My ex husband filed a child contact case straight away a month after, and applied to stay in the country in the basis that the baby was a British citizen and he has been in the country for over 10 years illegally.

In November 2017, the court issued a non- molestation order against him.
In April 2018, a fact and finding hearing was carried on as part of the child contact case whereby the judge approved all my allegations of abuse against him. I sent the relevant papers to the home office straight away.

In July 2018, my non molestation was renewed with special mention that child direct contact is not permitted for now unless CAFCASS mentions otherwise. On the day, while we were in the court, my estranged husband sent a private text to someone threatening to kill me which I got hold of. My lawyer mentioned it straight away to the magistrates and my allegation was approved following a small fact and funding procedure.
Relevant court orders was sent to the home office again.
By mid of September 2018, CAFCASS sends a report advising that direct contact is not recommended as my Ex -husband was seen as a high risk person. However, he was given a choice to pay £2000 so that they could do a specialised assessment of the risk associated but until then only indirect child contact was permitted through letters or photos. Another hearing was scheduled on January 2019 where ex husband did not turn up or did not bother to notify the court. The court dismissed the case after the magistrates were advised that he gaff been 1 hour late on previous hearing and this time he made no effort to notify the court about not turning up.
Again no direct child contact was ruled and the court agreed with CAFCASS, that this person is a high risk to the child. By the 17th of January 2019, I sent the relevant papers to home office.
Having a non- molestation order against my ex and having suffered a few attacks in the past, I am concerned for the safety of my child and myself, so I made some research. I found out that my ex was issued with a resident permit from 6 September 2018 to February 2022.
Now I am really concerned with the way home office has dealt with this. Even afterCAFCASS has assessed this person as a high risk