White Spot Under Watch overnight - how to get it fixed or replaced?

Please contact Garmin Support. The spot is moisture as I understand it and I have seen multiple instances on the forum. See f.i. https://forums.garmin.com/sports-fitness/healthandwellness/f/vivoactive-3-3-music/215061/white-spot-on-vivoactive3-screen/1059797#1059797 to compare the pictures. 

Garmin Support is at :

support.garmin.com/.../

many thanks hhasert I've been reading the other forum posts on this and it appears to be a common flaw. I used the windows software to send a support email. I was surprised that Takealot would not assist or even enter dialogue with me as the watch was outside 12 months. Hopefully they provide a satisfactory resolution. I appreciate the time you took to reply and trust you and your family have a safe and happy new year.

You are welcome. In my country the 12 months would be debatable since it obviously is a manufactory defect and a customer should receive (a refactored) device even after the formal warranty expired. It depends on life expectancy for the device of course, but 12 months and a bit is definitely too short. Good luck, hope they help you out (perhaps at shipping cost though). Have a safe and healthy new year ! 

UPDATE: Garmin got in touch & asked me to courier the watch to them. They fixed it promptly at no charge and couriered it back to me. Very impressed with their service & they went the extra mile in my opinion. It is without a doubt a design flaw which means it will probably happen again. Very happy with Garmin's service.

However - Heart Rate Monitor is a little erratic when exercising. Never had this happen before. I'm going to just roll with it but here is my question.

Should I be considering another Garmin? I am nervous of another design flaw in a different Garmin model. This Vivoactive was meant to be my last watch purchase & after 2 years I'm seriously considering replacement. Design flaw means its likely hood of reoccurring is high.
My Uses: Daily Training, Treadmill, hiking etc.

I am considering the Venu 2 - provided no more design flaw! Definitely prefer a touch screen & my pocket is not deep enough to afford the fancier top end with touch screens.
Is there a different Garmin Model I should be considering or look at another brand? I do give Garmin full credit for their really good service. However my next smartwatch needs to be a real keeper.

I posted this in the wrong forum earlier in case you came across it there :)

You could look at a fenix 6 since they are superseeded and prices comparatively low. They are built more robust I understand. 

Thanks hhasert I was considering the Fenix then I found these 2 pieces of information. 1: Not Touchscreen & 2 This Post on the Garmin Forums today, showed a Fenix 6 from 2019 with the same white spot. That's a real downer as I will not be able to justify buying a new watch very 2 or 3 years.

These things are either robust or they aren't.  I was surprised to see that Fenix post as that indicates the problem crosses models. I really need more info or reassurance that Garmin have fixed that problem. Love the look & functionality of the Garmin Range, but they need to deliver.

I understood the Fenix range was built with military specs (thermic, shock and water proof), so at least water proof under duress, that is why I mentioned it (and was looking at it for a potential upgrade).  Perhaps that statement on military specs is that they looked at them but do not test them. The touch screen is on Fenix 7 (but expensive) and sometimes I hate the touchscreen since it messes up when playing golf, so I did not mind that very much.   

hhasert Actually you've got a point there re Touchscreen. When its cold & I run with a long sleeved sweatshirt it has sometimes stopped recording the run (contact with sweatshirt) Could always lock it I suppose. Keep Forgetting as it doesnt happen that often. Like you i'm surprised at that post from nicco? as I was also under the impression it was military specs or similar.

I haven't seen anything like this about the Venu 2 though. Frankly I'm not in a rush anymore. I don't need a newer smartwatch as it's an indulgence. I do need reassurance before getting another though :)