I've experienced these issues when using "_" underscores in my column names like "client_id".
Could you try to duplicate your table, just for testing, but avoid underscores for the table and column names? --> Then try your WADA pages again.
I know, you were also on the "Interakt train" a long time ago...
Interakt always used column names like "id_usr" and so on.
I think, DataAssist just doesn't like that naming convention.