Refusal & no appeal

Last weekend I received an email from the Gov with there decision to reject my Skilled worker visa. Based on the idea that I am a visitor to the country (which I am not) I am currently in the UK on a administrative review of my EUSS visa, I have a social security number and share code giving my right to work. I have been imployed for the last 20months.

On my rejection I have no option to appeal or start an administrative review. I also wasn’t given a date by which I need to leave the country.

What are the next steps I can take? I believe they made a mistake and I would really like to appeal their decision.