Can’t save changes

Hello,
I’m trying to create a new pricing table but it’s not working.
After clicking on the save button it’s not working, just loading …
https://prnt.sc/AxuO2Ky7Fw81

I tried contact you by internal support
https://supsystic.com/contact-us/
After clicking on send button it’s not working, just loading …
https://prnt.sc/V5PSILhpiBn7
Could you help me please? Thank you.
Best regards,
Miroslav.