Facts about ETHPlus.
Highest known price: $ 29.45
Last Price: $ 0.041327
Amount of assets issued: 20 million.
Return on investment -85% taking into account its current price.
The main ETHPlus website is out of service, apparently some of the resources that allowed access to it were eliminated. As for your Dapp, the notification that appears is that the security certificate has expired so it is not safe to send data or connect a wallet. You could lose all your funds.
In general, I would recommend staying away from this token as you may lose your funds as there is no data to corroborate that it is still active. As for your Dapp should not connect as it may not be secure. Although it has movements, everything seems to indicate that it is abandoned.