Hello Johndavies_799,my name is Luiz Cruz independent consultant and I'm here to help you;
I understand Edge translation is not working on your Iphone;
In that case I suggest you try the following;
Launch Edge;
Click on the three bars (upper right corner of the screen) and access Settings;
Go to General > Microsoft Translator;
Enable the "Translate pages" option;
Check the languages in the list, if the option is set to "Never translate", click on the language and enable the option "Offer for Translation";
You can add more languages by clicking on "Add Language...";
Close Edge and launch again;
Check if the pages are translated now;
Hope this helps, see you soon!