I run a wix.com website from my iMac and now have edit text problems.

I run a wix.com website from my iMac (21.5 inch, late 2013, processor 3.1 GHz Intel Core i7, memory 16GB, MacOS 10.13.6). Suddenly the "edit text" function within wix.editor.com will not work consistently. This is used to add and change text within website content and is used daily. Some days it works fine and others it will not load.

Wix say they can see no faults and it must be my computer. When not working, the cursor on the text area is a vertical cross with arrows on the diagonals, held with a diamond frame. The cursor on the edit text box becomes a hand.

I have cleared web history, caches and cookies and started again many times. Apart from the upgrade to MacOS 10.13.6 I have not consciously made any changes to my iMac. Accessing and editing my website (guildfordartsociety.co.uk) on wix.com from other Windows computers does not show up any problems.

HELP!