Investigate occasional issues with token renewal

[solita-sabinaf]

When the page is left without action for some time (e.g. a matter of an hour but could be less), it can result in the following situation:

Setting "silentRenew": true didn't have an affect, but so far been tested only in a local environment.

[testower]

@solita-sabinaf would you be able to add something to the README about recommended settings for this?