Hello

A few days ago I had my site fixed by my hosting supplier now I have noticed that all my URLS have changed.

This has messed up my site being listed my google search & it's now started to worry me.

Each URL now has random numbers & letters at the end.

'?zenid=91aedc3047cd9c0c73b2671bec61b787'


Is this bad & how can it be fixed?
Or should I not worry at all.


Any help please would be wonderful

Thank you