Hello Djdamro,
When fitted properly you shouldn’t have any problem with erections. In fact, it is quite normal to sport a chubby as a result of the novel sensations of walking around sporting a sizeable increase in mass while wearing the Stealth.
A possible size adjustment may be required if the glans remains purple and fully engorged for extended periods of time.
Contact support at info@stealthformen for more detailed consideration for a discounted replacement that may include a custom size if you need a tapered sleeve.