The temporary quota is valid for a certain period of time, and will automatically revert to the original quota after the period. After the temporary limit expires, the used temporary limit (the portion exceeding the fixed limit) does not enjoy the revolving credit facility and will be included in the minimum payment amount of the latest bill and must be paid off in one lump sum on the due payment date.
If it is inconvenient to repay in full, you can try to apply for bill installment.