Domoticz

I have the following problem. Each time, when new devices are added, dozens of 'Smartware RM174 smoke detectors' are added. As a result, the database has grown to 4000 devices, while I only have 200 of them myself. I have none smoke detectors. The result is that the overlight screen does not respond or hardly responds to devices when searching. If I select an entire series to delete them, the system crashes.
How can I solve this?

The problem is solved. It was Safari. It works in google chrome though.