Zoom thinks my meeting participants are in the Netherlands!

[NAMSS]

I've just tried to run a meeting and lots of my potential participants received a message to say they couldn't join from the Netherlands.  They were all UK based and lots of people did manage to join.  How can I stop this happening again? 

[caliclub]

Same issue faced here. I cannot join meetings even though I am in the UK. It keeps assuming I am in the Netherlands. I have fiddled with my computer and still have no clue why.