It doesnt let people even push the send button

I have been using this plugin already for years, but in the last month or last couple of months, I don’t really know when, it stopped working. In the past, I had problems with it, having it send the emails like hours and even days after, so I had to change things, I specially remember the SMTP. But this time, although I have been looking for answers already for weeks, nothing works. So, what happens is that when people fill out the form and they go ahead and they press send, it doesnt work, the button turns orange on the border, it doesn’t say anything. For some other people what happens is that then are able to push, but then the symbol of thinking appears and the form is never sent, or sometimes I do get the message from hubspot that was working with the form, but I never get the email from contact form 7. I tried looking for incompatibility, so I deactivated all the plugins working with it, hubspot, conditional fields for contact form 7, but nothing, I keep having the same problem.

What I found was that the form was taking the messages as spam, so that I had to configure the recaptcha, which I did, but nothing. The number of people contacting us reduced significantly. I do understand I am not paying a penny for it, but in real life, I think I am paying thousand dollars for not having it working, so… I am looking for reliable alternatives, even if I have to pay. I looked for a pro version of the contact form 7, since I have been using it for years, so I should also be thankful, but it looks that there is no support… Please help me find alternatives… it is better if it is free, but if it is not, and it is reliable I am willing to pay.