Cancel auto-renew to upgrade to multiple device subscription?

Hi, I logged into my account today and noticed that I’m subscribed to SecureLine VPN for a single device (PC), but I’m getting a new Android phone next week and wanted to cancel that so I could upgrade to multiple device instead… But there was an error processing the cancellation request (I assume because it’s already processing the renewal)… how do I go about switching it if I still want to change it to multiple device instead of single? Thanks for any info!

Contact Avast customer support:

https://support.avast.com/en-us
Sales - Orders & Renewals https://www.avast.com/faq.php?article=AVKB24#artTitle