Anyone do sneak peek at home and NOT mail it back the same day?

Has anyone else done sneak peek at home and NOT mailed it back the day same you collected the sample? If so were there any issues or were they still able to process your sample? I did the at home kit today (the snap one) and went to the post office to mail it out right after and they were closed because todays Saturday. I went to another one across town but they closed at 3 and by the time I got there they were closed as well so now I can’t do anything with the sample until Monday because they’re closed tomorrow again since it’ll be Sunday.🙃 I got the standard shipping kit so it will take 2-3 business days to get back to their lab plus the 2 days that I’m going to have to wait to even mail it. Is this going to cause any issues or delays in finding out the gender? I didn’t even think to check if the post office nearby was open today before I did the test🤦‍♀️ I’m worried they won’t be able to process it now