Problems accessing CMB bank account online when out of Europe

Has anyone had trouble receiving a code via TXT / SMS from their bank (in France) when trying to gain on-line access when away from Europe?

I’ve had no issues with two factor authentication for any accounts, bank or otherwise, when travelling Alec. Are you sure you’ve got the country code in your personal details?

I thought the same as in for Fr N° + 33 (drop the 0) 6 21 32 53 etc