It seems that the UK txt-msg number to get credits at the shop has been quite unreliable.
So, after talking to Allopass, we changed the number and the price (from 2 GBP to 1.5 GBP).
Hopefully, it will be 100% reliable now.
As usual, if you have any problem to get your credits at the shop, feel free to contact us using customer support (last tab at the top of any page).
Unfortunatly, prices/credits depends on what's available to use in each country, and % of reversal to our partner and us.
We actually make far less money on norway (for example) than on UK.
We are always working on having each country's pricing as close as possible.