Spark 1080x1920 (IG Story) size is downloading at 720x1280px

[Natmit]

When I download a Spark Instagram Story-sized MP4, 1080x1920, it shows as 720x1280 px to my client and they think I am giving them the incorrect size. 

Also, the 1080x1080 MP4 downloads as 1280x1280. Very odd.

Does anyone know why this happens? I need to give my client a reason.

Thanks!

[Nancy OShea]

Please contact Spark Support on Zendesk.

https://adobespark.zendesk.com/hc/en-us/articles/360011707674-How-do-I-contact-Spark-Support-

There is no Spark support on this platform, sorry.