Free public numbers look attractive, but they are often noisy, recycled and visible to many other users. For VK, the gap between free and stable routes is usually the difference between a quick code and a broken signup attempt.
A dedicated number for VK is usually about regional fit, cleaner recovery or tighter separation between account clusters.
The route matters only when it fits the wider setup. Random country selection usually creates more friction than value.
Free public inboxes are reused by many people, visible to strangers and often already associated with abuse patterns.
For stable verification, dedicated paid routes are usually less noisy and far easier to control.
Prepare the VK flow first, then request the number, paste it into the form and wait calmly for the code.
Most failures happen because the route is requested too early, the form times out or the user starts spamming resend.
Mixing unrelated countries, sessions or recovery details makes a route look less natural and less stable over time.
A clean map between route, market and account use case is usually the difference between friction and smooth operation.
Short answers to the main questions related to this topic.
Usually yes, if you move verification to a separate SMS route instead of trying to skip it entirely.
It can, if the route is active, the country fit is sensible and the signup flow stays clean.
Usually no. Free public routes are noisy, heavily reused and much less predictable.
Finish the account setup, add recovery details where possible and avoid abrupt high-volume actions.