I just followed the link at
https://chainz.cryptoid.info/gp/ in the OP & it gave an automated splash-screen saying - 2 days past expiry, send BTC to this address to renew, fee 0.036 BTC/month (can send screenshot by email if you like)
But don't worry for now I pinged over 3 months worth of BTC (0.108) to tide it over, I'm only losing it on Bittrex anyway...
Address: 15rTnTUsrLhRjz2j9qijHH1kSLsKX2uGWS
TxId: 064d7f13c44a626f78e868a987765d37a6d17e1b0ea7e33d689e813ee572321e
feel free to bung some spare GP over if you have any lying around:
GQ1a6cbe8sC3KyV8oNsJgvcNm9pYpV5VVB
Cheers
John