“Your postage options have been updated”

Today I went into a previous listed item and updated the price. When I went to save a pop up came up “your postage options have been updated”. When I checked the worldwide option had been de-selected now. When I toggle it on it won’t save the worldwide option and only saves domestic postage. I have sold 4 items with worldwide before and there’s been no issues with buyers. I’m not sure how to get the worldwide option to save. I have updated the app, re-started the app and tried the Australian eBay website. whilst I can select worldwide upon saving it goes back to domestic. I also tried delisting but again the worldwide option wont save. What’s going on? How do I get the worldwide option to save?