Keep posting process as active tab/window to prevent it’s freezing and errors.
Don’t post simultaneously in many tabs/windows.
Most FreeTheTree issues are caused by:
1. poor internet connection – be patient and try again in few minutes
2. Gumtree servers overload – be patient and try again in few hours
3. permanent changes on Gumtree website – this issue requires our intervention and as soon as it is confirmed and analyse, we implement adequate fix.