European fare codes

Due to the change of the VS19/20 flight times this summer, I have to change my flight from LHR to DUS with BA. I can do that online for about 60€. As I insured the transfer with a ticketsafe insurance, the cost will be covered.
However, the insurance says that they will cover any change of the tickets up to 210€ and they don't need any proof that it is the cheapest option. This makes me think whether I can upgrade to a more flexible ticket while changing the flight time. If I choose flexible on the BA site, it automatically quotes Club Europe prices but I don't think that this will go throught with the insurance. Is there nothing in between business and lowest economy with BA?
Any help would be greatly appreciated
However, the insurance says that they will cover any change of the tickets up to 210€ and they don't need any proof that it is the cheapest option. This makes me think whether I can upgrade to a more flexible ticket while changing the flight time. If I choose flexible on the BA site, it automatically quotes Club Europe prices but I don't think that this will go throught with the insurance. Is there nothing in between business and lowest economy with BA?
Any help would be greatly appreciated
