Big Royal Mail 3.0

[brittainmark]

Hi there guys, I'm using this big Royal Mail plugin for my new store but I'm having trouble configuring things. I've read around and know there's loads of people having similar problems but there's no fix that I'm happy with so far.

Depending on whats in the cart sometimes 2nd class comes up as displaying "The shipping rate cannot be determined at this time". From what I've read this has to do with Tare but I'd quite like to keep my tare as it is. Also in the admin there's the option to "Hide Invalid Shipping" how come this option doesn't prevent the 2nd class option from appearing when the package is obviously too heavy to get a price on.

Is there anyway to stop the 2nd class non-option from appearing at this point since it also prevents the only other shipping option from being automatically selected.

In your admin go to Modules>Shipping
1)select the appropriate shipping method
2) click edit
3) set Hide Invalid Shipping to True
this should hide the shipping rate if it is invalid.