Looker studio issue with saving auto refresh settings

Hi guys, recently we've been experiencing troubles with Looker studio for some dashboards. We try to save the settings for auto refresh feature for specific time, hit save, but when returning back to the settings it looks like we didn't even touch it at all. It doesn't save the settings and that's why our dashboards are not updating with the latest data for the last day of the period. 
@GavinW do you happen to know the reason to this issue and how to solve it? Would appreciate any input

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