What is the ruling on the divorce that occurred and the divorce certificate issued by the ma'dhoun (authorized Islamic official), knowing that a legal seclusion took place and penetration occurred to the extent of the glans before the divorce, and was the reconciliation valid 25 days after the divorce via phone, and is the wife still under the husband's marital authority, and what is the ruling on engaging in marital relations via phone?

If you divorce your wife before consummating the marriage, but after a valid private meeting (khalwa sahiha), the divorce is effective, she must observe the iddah (waiting period), and a رجعة (revocation of divorce) is valid. If you take her back during her iddah, the revocation is valid. The divorce certificate issued by the ma'dhoun (authorized marriage official) is merely documentation and not a binding judicial ruling. It is advisable to observe agreements and customs related to delaying consummation, and to be cautious when communicating via social media due to the risk of hacking.