Hi! I've been using this device for about a month only during the day and I did not have any problems or annoyances, ultimately with my partner we went to continuous use day and night. We tried it for 4 days and it was very exciting The only problem was burning during the wash near the urethra, I think it is caused for the rubbing on the hole of device during repeated erections for 4 days. (The burn has passed after 2 days without device). Do you have any remedies or tips? thanks!