Welcome to the forum @baradhili
I’m not seeing any sign of API, after some searching, and also no standard protocols such as WebDAV.
Although the 100 GB deal might seem good, there are other companies with quite low per-GB paid cost.
Backblaze B2 and Wasabi come to mind, but both have some other factors that may raise costs a little.
Countering that is more granularity, instead of Degoo making you jump to 10 TB if you exceed 500 GB…
If you can talk Degoo into supporting an API like existing Duplicati Storage Providers have, that’d be best.
Degoo support rclone? points out that they use expensive storage. They may not want you using a lot…