Nasty void loop()
Before you go any further down this concluded code path full of delay() and other Blynk issues… I recommend you clean up the loop and use proper Blynk timer methods, switch() case and possibly even Blynk’s Menu Widget for your “Time adjustment” options.
Possibly even the Segmented Switch Widget might be of use… no Documents yet, but fairly striaght forward - Segmented Switch how it works
PS, please keep same issue in existing topic… no need to create multiple ones.