Set up Contact Form 7

We need to get to the bottom of the CF7. Ill write links to all the pages.
Since everything has been working normally until recently, it is literally December 19.
This is the problem, the forms with the text are sent, and when the user attaches all 3 files or at least one of the files, the form stops sending, i.e. after pressing the "send" button there is a rotating arrow icon and nothing else happens. In short, you dont send forms if you attach a file

All forms should be able to attach these file formats and weigh up to 5 mg, preferably even more
File format that can be attached:rar, zip, zipx, tmp, doc, docx, odt, pdf, pps, ppt, pptx, rtf, xls, xlsx, exe, bmp, gif, jpg, txt

All access to the site, etc.
Budget discuss