Two things I can think of: Disable myslq strict mode by running this query: SET@@global.sql_mode=''; or it might be that your systems default decimal character isn't set to a dot instead of a comma. But I'd guess that its caused by mysql strict mode.
Try to set seasonalcurrencyindicator.enabled to true. Not sure if this is for diamonds or GOTW points, eitherway, don't forget to clear your cache afterwards.
They recieve 100 coins every 15 minutes. You can probably disable this in your database (server_settings table maybe). If you cannot find it in your database, then it needs to be disabled in your emulator source.
Any errors on chrome dev tools? Show me a screenshot of habbo-imaging folder please? Also idk if it has anything to do with this, but try to add habbo-imaging to wwwroot too.
Very helpful.
You can change this in furniture table in your database, find the item and set can_sit to 0 (this should do the trick if I remember right).
Double check your SWF links, make sure to edit external variables and external override variables and check if the account_created column is a number and not a date.