OpenVPN 2.6.10 not working properly when using repeater

[C.Bou]

Hi,
Last week, we did an update of OpenVPN on all Windows clients from version 2.5.6 to version 2.6.10. The update was successful on all devices. However, for some users, VPN connection is successful but they could not reach internal websites. All affected users are using a repeater in combination with router. Both the router and the repeater are up to date. When connected directly to the router via WiFi (without repeater), everything works as expected and fine. Same when connected using cable. Pinging the internal websites in question works both using IP address or domain name. Switching back to older version also is a solution but we require to use the latest one. Fyi, we are using OpenVPN Community (Version 2.6.4) as OpenVPN server. Therefore, I kindly ask you to help me to solve this issue. Thanks.