Complex sentence: The temple was destroyed by fire during the reign of Septimius Severus and then restored: being the coins from the period of Augustus and Hadrian, there is also a possibility that the order of the temple was changed during the restoration by Septimius Severus.
Split into simpler sentences: The temple was destroyed by fire during the reign of Septimius Severus and then restored. Comparisons with coins from the times of Augustus and Hadrian suggest the possibility that the order of the temple was changed during the restoration by Septimius Severus.