The Epstein–Riemann conjecture for the identity Epstein zeta function

Let $\alpha\in\mathbb{N}$, let $\zeta_Q(s)$ be the Epstein zeta function associated with a real-valued positive definite $\alpha\times\alpha$ matrix $Q$, and let $\zeta_{\mathrm{id}}(s)$ denote the case $Q=\mathrm{id}$. A critical zero is a zero $s\in\mathbb{C}$ with $0<\mathrm{Re}(s)<\alpha/2$. Epstein–Riemann conjecture. All critical zeros $s\in\mathbb{C}$ of $\zeta_{\mathrm{id}}(s)$ have real part

$$\mathrm{Re}(s)=\alpha/4.$$

This extends the Riemann-hypothesis phenomenon to Epstein zeta functions and, via the identity $\zeta_{\mathrm{id}}(s)=\zeta(\Delta,s)$, to the spectral zeta function of a flat torus. The source presents the assertion as a conjecture and gives no resolution status.