It’s a fraud. It alleges that it can access Interval International getaways and re-rent them. It contacts Interval members and has them pay for the getaway even though Interval will not allow them to access their getaways. Total scam
The arrangement you describe is particularly concerning because it appears to exploit the trust Interval International members place in a familiar vacation-exchange system.
As I understand your account, the alleged scheme works like this:
Targeting timeshare members. Vaytoven contacts people who are members of Interval International.
Promising access to Getaways. It claims it can obtain Interval International Getaway accommodations and arrange to rent them out at higher prices, perhaps to visitors attending conventions.
Collecting money upfront. The member pays the cost associated with the Getaway, expecting Vaytoven to arrange the onward rental.
No apparent rental or accounting. According to your description, the promised rental does not happen, the money is retained, and the member receives no proper accounting.