The certificate itself for www.reporo.com (not reporo.com) is valid, but it is missing a chain certificate as shown in the report by ssllabs:
Chain issues Incomplete
....
2 Extra download Thawte DV SSL CA
Fingerprint: 3ca958f3e7d6837e1c1acf8b0f6a2e6d487d6762
The “Incomplete” and “Extra download” are the major points. Some browsers will have the missing chain certificate cached, others will do the download and other will fail. If you try the site with a fresh Firefox profile (which does not have any certificates cached) it will fail too.
You could download the missing chain certificates and use it as trusted CA certificate with the verify parameter for requests. Don’t just disable validation because then you are open to man-in-the-middle attacks.
Step by step instruction:
- Download the missing certificate at https://ssl-tools.net/certificates/vqgvhb-thawte-dv-ssl-ca (found by searching for the fingerprint given in the report from SSLLabs). Download the file in PEM format, i.e. https://ssl-tools.net/certificates/3ca958f3e7d6837e1c1acf8b0f6a2e6d487d6762.pem.
- Download the root certificate at https://ssl-tools.net/certificates/91c6d6ee3e8ac86384e548c299295c756c817b81.pem (also found by searching for fingerprint).
- Cat both files together into a new file
chain.pem. Make sure that each of the files did end with a valid end of line character (which they do not as downloaded). The resulting file should look like this. -
Modify your call to
requests.get('https://www.reporo.com/', verify = 'chain.pem')