After deeper analysis we discovered that it is not a bug in our modeler but in your particular model. You have primary identifier with many the same attributes and therefor they are generated in a physical model. Please see the following screenshot:

Thank you for reporting this. I confirm that there is a bug in these functionality and we have started repairing it.

Your domain is added to our academic domain list.

Hello, 

Thank you for reporting this. It is a bug and it will repaired as soon as possible. Correct links to these documents are as follow:

https://vertabelo.com/terms-of-service.pdf

https://vertabelo.com/privacy-policy.pdf

Best regards,

Jarosław

You can do this as long as the Vertabelo modeler outcome is used for educational purposes not commercial.

Hello, thank you for the information. Probably you hit system during the infrastructure rebalancing. So I close the ticket.

Best regards,

Jarosław

Hello January,

Your account expired in January 2022. I've prolonged your academic account plan till the end of November 2023. After that you will have to upgrade to a paid plan if you would like to still use Vertabelo Modeler.

Best regards,

Jarosław

Hello Luca, 

I see that you have recreated the account. So I close the ticket. 

Best regards,

Jarosław 

You can switch off FK autogenerating feature. Please see how to do it on the picture below: