From: Rabbi Akiva Eiger
To: Ektsin
Rabbi Akiva Eiger rules that the agunah cannot be permitted to remarry because Merla's later formal deposition substantially contradicts and weakens the testimony attributed to her in the initial reports, undermining the heter under both the hakchashah and chozer u'magid frameworks. He identifies two specific avenues — confirmation from the chazan of Mergentheim or from the Neukirchen innkeeper — that could resolve the inconsistency and potentially permit her to remarry.
Source: Shu"t Rabbi Akiva Eiger §113