Hi cp_csw,
Thanks for reaching out and I’m sorry to hear about your issue!
This is likely happening on the server side. Please get in touch with your hosting provider and ask them for the error log and see if they can help you with this.
I found this info on the 505 error: https://stackoverflow.com/questions/10734205/http-error-code-505
If you need further help from our side then please share your system information in a private reply with me.
Also if you could share some screenshot of the issue, that would be great.
Thanks and cheers,
Andras