In the first instance can you try deactivating Wordfence
Do you have cache enabled for logged in users? – if so the page may be cached in your browser and could be trying to authenticate the session through an expired cookie.Clearing your browser’s cache will fix the issue if this is the case
Can you also clear your browsing history
Also, can you ensure that cookies and site data are not blocked?
If none of this helps, please add the following to your wp-config (substituting your site name where appropiate.
Apologies for the delay over the weekend and the ongoing inconvenience.
We’ve made some tweak to one of the UpdraftPlus add-on files. The link to download the add-on file is attached in this email; we’d like you to download, copy and/or move the file to the “updraftplus/addons”.