How to create a facebook business manager account?

I had never had problems when registering on apps or internet websites, except for some difficulties that could be solved quickly. However, this time it is impossible for me to create a Facebook business manager account. When I try with the company's email, it tells me that this account already exists, something that is not true, and when I try with a personal email, the result is the following: Does any of this community know how I can fix the problem and register? I must create campaigns on Instagram and without this previous step, the social network will not let me advertise my posts. I need help, urgently! Someone to answer please ...