Are you using a domain or an IP address to connect?

If you are using a domain, try checking what IP your domain is resolving to on your network, and then check what it is resolving to on mobile or the different WiFi network. I have run into this issue when DNS records are slow to update.

If you are using an IP to begin with you can ignore this.

i have centos 7^^ droplet and 8 website in it. i cant access http, ftp, ssh, vestap … But everyone else can.

tracert 46.101.254.200

Tracing route to 46.101.254.200 over a maximum of 30 hops

  1     3 ms     1 ms     1 ms  192.^^
  2    24 ms    25 ms    23 ms  195.^^
  3    47 ms    47 ms    49 ms  31.^^
  4    46 ms    47 ms    45 ms  46.^^
  5    75 ms    47 ms    44 ms  ae4-17-ucr1.tuz.cw.net [195.2.23.129]
  6    62 ms    63 ms    64 ms  ae5-xcr1.sof.cw.net [195.2.27.149]
  7    84 ms    82 ms    86 ms  ae-11.r01.sofibu01.bg.bb.gin.ntt.net [129.250.66.57]
  8    85 ms    83 ms    86 ms  ae-3.r24.frnkge08.de.bb.gin.ntt.net [129.250.6.203]
  9   150 ms   160 ms   210 ms  ae-1.r04.frnkge08.de.bb.gin.ntt.net [129.250.3.218]
 10    93 ms    88 ms    87 ms  ce-0-8-0-3.r04.frnkge08.de.ce.gin.ntt.net [168.143.229.122]
 11     *        *        *     Request timed out.
 12    99 ms    96 ms    92 ms  46.101.254.200

Trace complete.