There are only two things you can do: 1. Open the settings (on right top) and then the Inbox table, go to the bottom row and there are two options Override filters/Don't override filters and select Override filters and save. 2. if first is done, go to settings again and open table Filters and Blocked Addresses, open it and delete all filters, save and go again to the same place and now make new filter for everything that usually goes to Spam. If you create a new filter, then in the second table select Never send it to Spam. No more options I don't know.