Hey Tristup,
I contacted them and they answered this about disabling Modsecurity:
Upon reviewing the escalation notes, I understand that you are receiving the mod security error at the link: https://www.careerplaybook.com/staging/4294/cornerstone-endpoint
However, when I access the same link, I could notice the message as " {“success”:false,“data”:{“invalid_user”:true,“message”:“nonce verification failed.”}}"
Here is the screenshot that I can see from my end when I accessed it:

Further, I have checked server logs and your local IP 146.0.189.50 and found ModSecurity rules generated for the cornerstone and whitelisted triggered nod_secuiry rules and your local IP.
A heads up that mod_security is an apache module that helps to protect your website from various attacks. It is used to block commonly known exploits by use of regular expressions and rule sets and is enabled on our shared servers. Mod_security can potentially block common code injection attacks which strengthens the security of your account as well as the server. That is the reason why mod_security plays an important role and sometimes the rule blocks become necessary as a safety measure.
Unfortunately, it is not possible to disable the Mod_secuirty on our server for security purposes, and I really do apologize for any inconvenience.
’
It is advisable to clear browser cache and cookies or try connecting to different network providers (Wi-Fi, routers). Here’s a link to learn more about clearing the browser cache: https://www.bluehost.com/help/article/how-to-clear-your-browser-cache
Please confirm the functionality on your end and if the issue persists please reply to this email with the following information to troubleshoot further:
- Exact steps to replicate the issue on our end.
- Exact URL where you experience the issue with the screenshot of the error.
- What should be the output or content of the above link while accessing.
- Provide us with the local IP of the device. Here is the link to get the local IP of the device: https://www.bluehost.com/ip
- Also, get back to us with traceroute information of the website, here is the help link to get it: https://www.bluehost.com/help/article/traceroute-tracert
Anyway, I still don’t get it… I can upload 2 of the 4 templates now… why the last 2 are still blocking???
Those 2 are the one I can’t upload:
Could you try to upload them on your end again please?
Thanks a lot,